Science Quizzes II - quizmegaslayer.com

2 votes, 5 avg

General Science Quiz #12

1 / 10

What does DNA contain that RNA does NOT contain?

adenine

cytosine

guanine

thymine

2 / 10

A pH value of 11.45 indicates a/an __________ solution.

acidic

basic

neutral

synthetic

3 / 10

Force = ____________________

mass x acceleration

work x distance

mass / acceleration

distance / work

4 / 10

The asteroid belt is between:

Earth and Mars

Jupiter and Saturn

Mars and Jupiter

Saturn and Uranus

5 / 10

An elm tree is a/an:

autotroph

evergreen

heterotroph

omnivore

6 / 10

The Second Law of Thermodynamics states that the ___________ of the universe is increasing.

entropy

energy

enthalpy

electronegativity

7 / 10

Warmer air rises while cooler air descends. This is an example of:

conduction

convection

osmosis

radiation

8 / 10

The chemical symbol for platinum is:

9 / 10

An alkaline or basic solution will feel:

hot

sticky

rough

slippery

10 / 10

Which one is NOT a chordate?

blue whale

octopus

seal

tuna

Your score is

The average score is 97%

1 votes, 5 avg

Is It Colorless/Colourless? – Sudden Death Quiz

In a sudden death quiz, one incorrect answer causes the quiz to end. Choose wisely!

1 / 22

pure water

Colorless

NOT colorless

2 / 22

liquid bromine

Colorless

NOT colorless

3 / 22

amoebas

Colorless

NOT colorless

4 / 22

hydrogen gas

Colorless

NOT colorless

5 / 22

rubbing alcohol

Colorless

NOT colorless

6 / 22

anthracite

Colorless

NOT colorless

7 / 22

acetone

Colorless

NOT colorless

8 / 22

volcanic glass

Colorless

NOT colorless

9 / 22

clean air

Colorless

NOT colorless

10 / 22

dilute hydrogen peroxide

Colorless

NOT colorless

11 / 22

liquid mercury

Colorless

NOT colorless

12 / 22

nudibranchs

Colorless

NOT colorless

13 / 22

hexane

Colorless

NOT colorless

14 / 22

Sprite soda

Colorless

NOT colorless

15 / 22

maple syrup

Colorless

NOT colorless

16 / 22

radon gas

Colorless

NOT colorless

17 / 22

potassium dichromate crystals

Colorless

NOT colorless

18 / 22

mineral oil

Colorless

NOT colorless

19 / 22

vodka

Colorless

NOT colorless

20 / 22

chlorine gas

Colorless

NOT colorless

21 / 22

gasoline

Colorless

NOT colorless

22 / 22

beer

Colorless

NOT colorless

Your score is

The average score is 85%

Pos.	Name	Score	Duration
1	Guest	68 %	1 minutes 12 seconds

1 votes, 5 avg

General Science Quiz #13

1 / 12

Pure substances composed of more than one type of element are called:

alloys

compounds

heterogeneous mixtures

solutions

2 / 12

On which pair of particles would a force of repulsion occur?

proton and neutron

neutron and neutron

proton and electron

electron and electron

3 / 12

Which one of the following molecules directly requires the element nitrogen?

carbohydrates

fats

proteins

steroids

4 / 12

X + Y <----> XY

If some of reactant X is removed from the system, in which way will the reaction shift in order to reestablish equilibrium?

the reaction will shift to the left

the reaction will shift to the right

the reaction will not shift

none of these

5 / 12

Small fish eating parasites that live on the skin of a large fish is an example of:

commensalism

dysfunctional parasitism

mutualism

the bottleneck effect

6 / 12

What determines the function of a protein?

the protein's specific structure

the types of side chains on the protein

the number of peptide bonds

the tissue that produces the protein

7 / 12

In an acidic solution, litmus paper is ________ and phenolphthalein is _________.

blue; colorless

blue; pink

red; colorless

red; pink

8 / 12

The first cells on Earth are likely to have been:

aerobic prokaryotes

amino acids

anaerobic prokaryotes

ribozymes

9 / 12

Which statement is TRUE?

Mechanical advantage = effort force / resistance force

Mechanical Advantage = resistance force / effort force

Mechanical advantage = effort force – resistance force

Mechanical advantage = resistance force – effort force

10 / 12

Which one of these is a diprotic acid?

bromic acid

hydrochloric acid

nitric acid

sulfuric acid

11 / 12

Which statement is FALSE?

Mars has more moons than Earth has.

Saturn is larger than Uranus

Venus has a thick atmosphere.

Mercury is home to the tallest volcano in the Solar System.

12 / 12

The relationship between buoyant force and weight of displaced fluid was stated by:

Archimedes

Bernoulli

Aristotle

Newton

Your score is

The average score is 81%

Pos.	Name	Score	Duration
1	Guest	67 %	1 minutes 29 seconds

1 votes, 5 avg

General Science Quiz #14

1 / 12

During a phase change such as vaporization,

heat is absorbed but there is no rise in temperature

heat is absorbed and the temperature decreases

heat is given off and the temperature increases

heat remains constant and the temperature increases

2 / 12

How does a meteor become a meteorite?

it goes into orbit around the Earth

it burns up in Earth's atmosphere

it hits the Earth's surface

its size reduces by one-half

3 / 12

Which cell structure-function pair is incorrectly matched?

ribosome – synthesis of lipids

vacuole – storage

chloroplast – photosynthesis

lysosome – breakdown of ingested substances

4 / 12

If a gas at 0.80 atmospheres of pressure has a volume of 20.0 liters, what is the volume of the gas at 0.40 atmospheres of pressure? Assume that all other factors remain constant.

10.0 liters

20.0 liters

30.0 liters

40.0 liters

5 / 12

Approximately how long does it take the Moon to complete one orbit around the Earth?

25.3 days

27.3 days

29.3 days

31.3 days

6 / 12

What is the approximate mechanical advantage of a pulley system with four supporting ropes?

7 / 12

What property of water allows it to move upward from the roots of a tree to its leaves?

high specific heat capacity

cohesion/adhesion

high heat of vaporization

universal solvent

8 / 12

What is one way in which scoria differs from pumice?

Scoria is an igneous rock; pumice is a metamorphic rock.

Scoria is a metamorphic rock; pumice is an igneous rock.

Scoria is less dense than pumice.

Scoria is denser than pumice.

9 / 12

Pressure in a fluid acts:

downward only

upward only

upward and downward only

in all directions

10 / 12

The pumping of substances across a membrane against the direction of spontaneous movement is which type of work?

diffusion

active transport

passive transport

electrolysis

11 / 12

A 1.0-molar solution of copper(II) sulfate in a beaker is left uncovered over the weekend. On Monday, which statement will be true?

The molarity of the solution will be greater than 1.0M and the solution will have a darker blue color than on Friday.

The molarity of the solution will be greater than 1.0M and the solution will have a lighter blue color than on Friday.

The molarity of the solution will be less than 1.0M and the solution will have a darker blue color than on Friday.

The molarity of the solution will be less than 1.0M and the solution will have a lighter blue color than on Friday.

12 / 12

What is the deepest ocean trench?

Tonga Trench

Demon Trench

Mariana Trench

Java Trench

Your score is

The average score is 88%

1 votes, 5 avg

Bone, Muscle, Gland, or Organ?

1 / 20

liver

bone

muscle

gland

organ

2 / 20

tibia

bone

muscle

gland

organ

3 / 20

pituitary

bone

muscle

gland

organ

4 / 20

brain

bone

muscle

gland

organ

5 / 20

soleus

bone

muscle

gland

organ

6 / 20

ulna

bone

muscle

gland

organ

7 / 20

thyroid

bone

muscle

gland

organ

8 / 20

gastrocnemius

bone

muscle

gland

organ

9 / 20

pineal

bone

muscle

gland

organ

10 / 20

spleen

bone

muscle

gland

organ

11 / 20

malleus

bone

muscle

gland

organ

12 / 20

bladder

bone

muscle

gland

organ

13 / 20

latissimus dorsi

bone

muscle

gland

organ

14 / 20

metacarpals

bone

muscle

gland

organ

15 / 20

prostate

bone

muscle

gland

organ

16 / 20

external oblique

bone

muscle

gland

organ

17 / 20

mammary

bone

muscle

gland

organ

18 / 20

kidneys

bone

muscle

gland

organ

19 / 20

trapezius

bone

muscle

gland

organ

20 / 20

coccyx

bone

muscle

gland

organ

Your score is

The average score is 98%

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Chemistry Quiz

1 / 12

Substance AB2 (the 2 is meant to be a subscript) is 60% A by mass. What is the percentage mass of A in substance AB?

50.0%

66.7%

70.0%

75.0%

2 / 12

What type of chemical bond is expected to form between potassium and fluorine?

hydrogen bond

ionic bond

nonpolar covalent bond

polar covalent bond

3 / 12

Which has greater mass, 1.0 liter of feathers or 1.0 L of lead?

1.0 L of feathers has greater mass.

1.0 L of lead has greater mass.

The masses are the same.

4 / 12

Is the melting of ice cream an endothermic process or an exothermic process?

endothermic

exothermic

5 / 12

If 10.0 mL of NaOH neutralize 40.0 mL of 0.500M HCl, what is the concentration of the sodium hydroxide?

0.125M

1.00M

2.00M

4.00M

6 / 12

2Mg + O2 ——-> 2MgO

Which element is oxidized in the reaction?

magnesium

oxygen

7 / 12

If the pOH of a solution is 8.40, then the pH is ____.

5.60

6.40

8.40

9.60

8 / 12

A + Z <-----> AZ

Assume that all components of the reaction are in the gaseous phase. If the system is initially at equilibrium, and then some of the product AZ is removed from the system, what will occur?

the system will shift to the left

the system will shift to the right

the system will not shift

none of these

9 / 12

Which process or processes involve(s) an increase in the entropy of the system?

both the melting of a solid and the sublimation of a solid

only the melting of a solid

only the sublimation of a solid

neither the melting of a solid nor the sublimation of a solid

10 / 12

You are given 50.0 mL of 4.00M aqueous potassium hydroxide solution. You are instructed to dilute the KOH solution to 1.00M. How many milliliters of distilled water must you mix with the given solution?

50 mL

100 mL

150 mL

200 mL

11 / 12

What is the oxidation number of manganese in potassium permanganate, KMnO4 (the four should be a subscript)?

12 / 12

X + Y <------> XY

For the gas phase reaction shown above, the concentration of X is 4.0M, the concentration of Y is 1.0M, and the concentration of XY is 6.0M. Determine the value of the equilibrium constant, K.

0.50

0.67

1.3

1.5

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The average score is 100%

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General Science Quiz #15

1 / 12

A solution with a pH of 3 is:

30 times less acidic than a solution that has a pH of 6

1,000 times less acidic than a solution that has a pH of 6

30 times more acidic than a solution that has a pH of 6

1,000 times more acidic than a solution that has a pH of 6

2 / 12

Which statement is TRUE concerning a shield volcano?

large volcano built by runny lava flows

small volcano built by viscous lava

formed by mega-explosive eruptions

underwater volcanic structure

3 / 12

Before mitosis begins, what happens before the nucleus starts dividing?

the cytoplasm separates

the DNA replicates

the sister chromatids separate

the homologous chromosomes cross over

4 / 12

Which is most likely to cause variations to occur within a species?

mutualism

osmosis

mutations

predation

5 / 12

What is the most likely outcome if all mitochondria are removed from a plant cell?

it will be unable to carry out respiration

it will lose water through osmosis

it will break down the ribosomes in the cell

it will cause the cell to undergo crenation

6 / 12

You find a red element that is solid at standard temperature and pressure. After experimentation, you determine that the element is a poor conductor of electricity. The element is most likely to be ___________.

bromine

carbon

copper

phosphorus

7 / 12

An atom of deuterium contains:

1 proton, 1 neutron, and 0 electrons

1 proton, 1 neutron, and 1 electron

1 proton, 2 neutrons, and 0 electrons

1 proton, 2 neutrons, and 1 electron

8 / 12

During the titration of a weak acid with a strong base, the equivalence point will occur…

at a pH less than 7

at pH 7

at a pH greater than 7

none of the above

9 / 12

An increase in the speed of sound is directly related to an increase in ____________.

amplitude

temperature

wavelength

crests

10 / 12

The color that is refracted at the greatest angle is ________.

green

red

violet

yellow

11 / 12

A temperature inversion occurs when…

cool air is trapped under warm air

warm air is trapped under cool air

warm air rises above cool air

winds do not blow

12 / 12

Which one of the following is NOT a chemical change?

burning coal

digesting food

boiling water

respiration

Your score is

The average score is 100%

2 votes, 5 avg

Matching Quiz: Moons to Planets

1 / 4

Match each moon with its planet.

Deimos

Europa

Ariel

Rhea

Proteus

2 / 4

Match each moon with its planet.

Umbriel

Iapetus

Nereid

Ganymede

3 / 4

Match each moon with its planet.

Triton

Miranda

Titan

Phobos

4 / 4

Match each moon with its planet.

Callisto

Oberon

Dione

Larissa

Your score is

The average score is 89%

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Element Symbols: First Letter of Symbol is Different from the First Letter of the Name

1 / 10

2 / 10

3 / 10

4 / 10

5 / 10

6 / 10

7 / 10

8 / 10

9 / 10

10 / 10

Your score is

The average score is 100%

1 votes, 5 avg

Helium Quiz

1 / 10

The atomic number of helium is ___.

2 / 10

Helium is named for the Greek god of the _________.

Chariot

Harvest

Moon

Sun

3 / 10

Helium is a:

colorful gas

flammable gas

noble gas

pungent gas

4 / 10

Helium has an atomic mass of approximately ____ atomic mass units.

5 / 10

The symbol for helium is:

6 / 10

How many valence electrons does an atom of helium have?

7 / 10

Helium is the:

most common element in the universe

second most common element in the universe

third most common element in the universe

fourth most common element in the universe

8 / 10

The most abundant isotope of helium contains:

2 protons, 2 neutrons, and 2 electrons

2 protons, 2 neutrons, and 1 electron

2 protons, 3 neutrons, and 2 neutrons

2 protons, 3 neutrons, and 1 electron

9 / 10

Helium was discovered during…

gravitational flitration

fractional distillation

mathematical calculations

spectroscopy of the Sun

10 / 10

In what year was helium discovered?

1708

1768

1808

1868

Your score is

The average score is 95%

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Chemistry: Matter and Change

1 / 12

Chemistry is a science that deals with the study of:

living things and their life processes

the physical features of the Earth

the motion and realtive positions of stars and planets

the composition, structure, and properties of matter

2 / 12

An iron nail rusts over time. This is an example of a/an:

chemical property of matter

extensive physical property of matter

intensive physical property of matter

none of the above

3 / 12

an example of an extensive property is:

volume

odor

texture

freezing point

4 / 12

an example of an element is:

bronze

rhenium

dirt

propanol

5 / 12

An example of a heterogeneous mixture is:

sodium bromide

oxygen gas

clean air

baseball

6 / 12

Which process is a chemical change?

boiling ethanol

dissolving potassium fluoride in water

burning a piece of magnesium ribbon

grinding a crystal of copper(II) sulfate into powder

7 / 12

Water freezing at 0 degrees Celsius is an example of a/an:

chemical property

extensive physical change

intensive physical change

thixotropic mixture

8 / 12

Every pure chemical compound is composed of two or more elements:

combined chemically

combined in any proportion

that can be separated by physical change

that cannot be separated

9 / 12

Which of these is a homogeneous mixture?

cheeseburger

brass

oil and water

pennies and dimes

10 / 12

The phase of matter in which a material has a definite volume and a definite shape is called ________.

gas

liquid

plasma

solid

11 / 12

carbon + oxygen ——> carbon dioxide

Which statement is true concerning this equation?

oxygen is a reactant

carbon dioxide is a reactant

elemental carbon is a product

the arrow means "equals"

12 / 12

Which one is a chemical change?

melting an ice cube

sharpening a pencil

dissolving sugar in water

decomposing mercury(II) oxide

Your score is

The average score is 100%

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General Chemistry Quiz

1 / 12

Which statement is TRUE?

Liquids tend to contract when heated.

Fermentation is classified as a physical change.

Reactants are the starting substances in a chemical reaction.

The particles of a gas cannot be compressed into a smaller volume.

2 / 12

Which process separates substances on the basis of boiling point temperatures?

chromatography

crystallization

distillation

filtration

3 / 12

Which one of these statements is FALSE?

A single proton has greater mass than a single electron.

The number of neutrons in an atom is referred to as the atom's atomic number.

In a neutral atom, the number of protons is the same as the number of electrons.

The periodic table of elements is arranged by increasing atomic number.

4 / 12

Which of these has a positive charge?

alpha particles

beta particles

gamma rays

none of these

5 / 12

The ground state electron configuration of helium is:

1s¹1p¹

1s²

1p²

1s¹1d¹

6 / 12

Why do sodium and potassium, which belong to the same group on the periodic table, have similar chemical properties?

Na and K have almost exactly the same atomic mass.

Na and K have the same number of neutrons.

Na and K are rare earth metals.

Na and K have the same number of valence electrons.

7 / 12

An atom becomes an anion by:

gaining an electron or electrons

gaining a proton or protons

losing an electron or electrons

losing a proton or protons

8 / 12

Which statement is TRUE?

Alkaline earth metals are completely unreactive.

Alkaline earth metals have densities less than 1.00 gram per cubic centimeter.

Alkali metal atoms have two valence electrons.

Alkali metals are soft enough to be cut with a knife.

9 / 12

Which statement is TRUE?

In ionic bonding, electrons are transferred from a nonmetallic atom to a metallic atom.

In ionic bonding, electrons are transferred from a metallic atom to a nonmetallic atom.

In nonpolar covalent bonding, the atoms involved have great differences in electronegativity.

In polar covalent bonding, only single bonds may be formed.

10 / 12

The shape of a molecule that has three single covalent bonds and one lone pair of electrons on the central atom is called:

octahedral

tetrahedral

trigonal planar

trigonal pyramidal

11 / 12

What type of ions are present in solution but not part of a chemical reaction?

diprotic ions

heavy metal ions

precipitate ions

spectator ions

12 / 12

0.500 moles of helium contain how many atoms of helium?

3.01 x 10²³

3.01 x 10²⁴

6.02 x 10²³

6.02 x 10²⁴

Your score is

The average score is 100%

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General Science Quiz #16

1 / 12

What is the primary function of a cell membrane?

determining genetic traits

breaking down particles for energy

defending against foreign particles

generating energy from mineral nutrients

2 / 12

What do scientists call the disk that encircles a black hole?

accretion disk

event horizon disk

relativistic disk

ergosphere disk

3 / 12

What is the primary cause of wind formation on Earth?

solar storms and solar flares

uneven heating of Earth's surface

volcanic eruptions

Moon's gravitational pull

4 / 12

An object with a mass of 3 kg moves with a speed of 4 m/s when seen from the ground, while it moves with a speed of 2 m/s when observed from a bicycle. What is the difference in the kinetic energy observed by both frames of reference?

9 J

12 J

15 J

18 J

5 / 12

What is the function of autotrophs in the carbon cycle?

to use oxygen to produce glucose

to take in excess water

to use carbon dioxide to produce glucose

to feed on carnivores and herbivores

6 / 12

What color is the planet Saturn?

pale blue

pale green

pale red

pale yellow

7 / 12

What is the name of the force that causes moving air to curve due to Earth’s rotation?

Centrifugal force

Coriolis effect

Friction

Henry's Law

8 / 12

What is the primary role of oxygen in cellular respiration?

act as an acceptor for electrons and hydrogen, forming water

yield energy in the form of ATP

combine with carbon, forming carbon dioxide

combine with lactate, forming pyruvate

9 / 12

Which statement is TRUE?

Igneous rocks are made from grains of other rocks that have been compacted together.

Sedimentary rocks do not form in layers.

Metamorphic rocks are always formed on the surface of Earth.

Igneous rocks and metamorphic rocks often contain crystals.

10 / 12

A student dissolves 10.0 grams of NaOH (molar mass = 40.0 g/mol) in enough water to make 500.0 mL of solution. What is the molarity of the solution?

0.250M

0.500M

1.00M

2.00M

11 / 12

What are the fast-moving “rivers” of air located high in the troposphere called?

Jet Streams

Polar Easterlies

Trade Winds

Westerlies

12 / 12

The titration curve shown here represents the titration of a:

strong monoprotic acid with a strong base

strong polyprotic acid with a strong base

weak monoprotic acid with a strong base

weak polyprotic acid with a strong base

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General Science Quiz #17

1 / 12

A small plastic cube has a length of 3.0 cm, a width of 2.0 cm, and a height of 1.0 cm. The mass of the cube is 4.0 grams. What is the density of the cube.

0.67 grams per cubic centimeter

0.80 grams per cubic centimeter

1.2 grams per cubic centimeter

1.5 grams per cubic centimeter

2 / 12

Lyme disease is a _____-borne bacterial infection.

earwig

leech

mosquito

tick

3 / 12

Where in a human are buccal cells found?

inner lining of the cheek

inner lining of the ear

inner lining of the nose

inner lining of the throat

4 / 12

Drosophila melanogaster is commonly used in some types of scientific research. What type of fly is this?

cluster fly

fruit fly

horse fly

sand fly

5 / 12

If the half-life of radioactive isotope Z is 5 years, how much of an original 200-gram sample of Z remains after 25 years?

100 grams

12.5 grams

6.25 grams

25.0 grams

6 / 12

What is the main source of energy that drives winds on Neptune?

internal heat

solar energy

gravitational pull from Uranus

condensation of gaseous methane

7 / 12

Geologic features known as karsts are primarily associated with what type of rock?

shale

granite

sandstone

limestone

8 / 12

How many hydrogen atoms are in three molecules of water?

9 / 12

Which is a type of lava flow?

e hele kahakai

mahalo

pahoehoe

shaka

10 / 12

What is the correct ground state electron configuration for an atom of fluorine (atomic number = 9)?

[He]2s²2p⁴

[He]2s²2p⁵

[He]2s¹2p⁵

[He]2s¹2p⁶

11 / 12

Which subatomic particle is responsible for an atom’s magnetic properties?

electron

neutron

proton

none of these

12 / 12

A boy who weighs 800.0 Newtons climbs a 5.00-meter rope in 10.0 seconds. How much work did the boy do?

80 J

400 J

4000 J

5000 J

work = force x distance

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Quiz: Chemistry

1 / 12

All of the following elements exist as diatomic gases at standard temperature and pressure EXCEPT:

2 / 12

Neutral atoms of oxygen-16, oxygen-17, and oxygen-18 all have:

8 protons and 8 neutrons

8 protons and 8 electrons

16 protons and 16 electrons

8 neutrons

3 / 12

Which of the following is a chemical property of zinc?

Zinc conducts electricity.

The density of zinc is 7.14 g/cm³

Zinc dissolves in acid, producing hydrogen gas.

Zinc melts at 1180 Kelvin.

4 / 12

Which one of these elements is a noble gas?

5 / 12

What answer should be reported if 0.57 cm is subtracted from 10.003 cm?

9.4 cm

9 cm

9.433 cm

9.43 cm

6 / 12

The number 0.000650 expressed in scientific notation is:

6.50 x 10^-3

6.50 x 10^-4

6.50 x 10^-5

6.50 x 10^-6

7 / 12

Given that the approximate atomic masses of carbon and oxygen are 12.0 g/mol and 16.0 g/mol respectively, what is the approximate molar mass of carbon dioxide?

28.0 g/mol

40.0 g/mol

44.0 g/mol

56.0 g/mol

8 / 12

Which of the following has the lowest frequency?

X-rays

infrared radiation

microwaves

ultraviolet radiation

9 / 12

Which of the following has the shortest wavelength?

gamma rays

ultraviolet radiation

microwaves

X-rays

10 / 12

Which of the following ions in least likely to form?

Fe²⁺

Se^2-

Ga³⁺

F^2-

11 / 12

Which statement is true of metallic elements?

do not react with acids

have low ionization energies

have electron affinities higher than fluorine

form nonpolar covalent halides

12 / 12

Which one of the following formulas must be an empirical formula?

P₄O₁₀

Na₂S₂O₄

Al₂S₃

As₄O₆

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Quiz: Chemistry Questions

1 / 12

Which statement is true regarding mass spectroscopy?

A mass spectrometer is used to separate the components of a homogeneous mixture.

A mass spectrometer is used to measure the mass and abundance of an isotope.

A mass spectrometer is used to weigh very small samples.

A mass spectrometer is used to measure the density of a sample.

2 / 12

A bottle of water has a volume of 50 centiliters. What is this volume in milliliters?

0.50 mL

5 mL

500 mL

5000 mL

3 / 12

How many significant figures are in the number 0.04900?

2 sig figs

3 sig figs

4 sig figs

5 sig figs

4 / 12

In a redox reaction, the reducing agent:

gains electrons and is reduced

gains electrons and is oxidized

loses electrons and is reduced

loses electrons and is oxidized

5 / 12

Calculate the change in energy for a system that loses 225 kJ of heat while the surroundings do 150 kJ of work on the system.

-375 kJ

-75 kJ

+75 kJ

+ 375 kJ

6 / 12

Which of the following has the greatest frequency?

blue light

green light

ultraviolet radiation

X-rays

7 / 12

Which of these has the longest wavelength?

microwaves

infrared radiation

X-rays

ultraviolet radiation

8 / 12

The boiling point of water is higher than the boiling point of hydrogen sulfide due to:

covalent bonding

ion-ion forces

hydrogen bonding

London dispersion forces

9 / 12

All of the following are colligative properties EXCEPT:

vapor pressure lowering

freezing point depression

osmotic pressure

solubility

10 / 12

If the rate of a reaction changes by a factor of 64 when the concentration of a reactant increases by a factor of 4, the order of the reaction with respect to this reactant is:

11 / 12

What is the conjugate acid of OH^-1?

H¹⁺

O^2-

H₂O

H₃O¹⁺

12 / 12

Which one of the following processes has a positive change in the entropy of the system?

N_2(g) + 3H_2(g) —–> 2NH_3(g)

steam —-> water

water —-> ice

CaCO_3(s) —-> CaO_(s) + CO_2(g)

Your score is

The average score is 79%

1 votes, 5 avg

Name the Twelve Largest Objects in the Solar System (in order)

Can you name the 12 largest (by diameter) objects in the solar system in the correct order?

1 / 12

largest object in the solar system

2 / 12

2nd largest

3 / 12

3rd largest

4 / 12

4th largest

5 / 12

5th largest

6 / 12

6th largest

7 / 12

7th largest

8 / 12

8th largest

9 / 12

9th largest

10 / 12

10th largest

11 / 12

11th largest

12 / 12

12th largest

Your score is

The average score is 83%

1 votes, 5 avg

Which are Fish?

Given 20 different animals, do you know which are scientifically classified as fish?

1 / 20

anglerfish