Quiz about Science Final Exam 2025

Question 1

The four diagrams below model the results of mixing atoms of different substances. Each atom is represented by a different symbol. Which diagram correctly models a chemical change?

Accepted Answer

Diagram C

Answer

Diagram A

Answer

Diagram B

Answer

Diagram D

Question 2

Based on the information in the table, which of the four substances below is a compound?

Accepted Answer

A. CO

Answer

B. He

Answer

C. Si

Answer

D. Fe

Question 3

Water vapor changes to liquid water during which process?

Accepted Answer

condensation

Answer

dissolving

Answer

melting

Answer

evaporation

Question 4

Which graph correctly shows the effect of heat energy on the motion of molecules of matter?

Accepted Answer

C. (Graph showing rate of motion increases with temperature)

Answer

A. (Graph showing rate of motion increases then decreases with temperature)

Answer

B. (Graph showing rate of motion decreases with temperature)

Answer

D. (Graph showing rate of motion remains constant with temperature)

Question 5

The tiny particles that make up all matter are called

Accepted Answer

atoms

Answer

genes

Answer

minerals

Answer

cells

Question 6

Plastic is used to cover the copper wires in the power cords of appliances because plastic differs from copper in

Accepted Answer

electrical conductivity

Answer

density

Answer

hardness

Answer

phase at room temperature

Question 7

Which graph best represents the relative distance between the particles of most substances in their solid, liquid, and gas states?

Accepted Answer

A. [Bar graph: S (close together, black), L (middle, gray), G (far apart, white)]

Answer

B. [Bar graph: S (close together, black), L (far apart, gray), G (middle, white)]

Answer

C. [Bar graph: S (middle, black), L (middle, gray), G (middle, white)]

Answer

D. [Bar graph: S (far apart, black), L (close together, gray), G (middle, white)]

Question 8

Which scientific model could be used to predict the properties of an element?

Accepted Answer

Periodic Table

Answer

closed loop system

Answer

Punnett square

Answer

water cycle chart

Question 9

Which equipment will best separate a mixture of iron filings and black pepper?

Accepted Answer

magnet

Answer

filter paper

Answer

triple-beam balance

Answer

voltmeter

Question 10

The diagram below shows an incomplete circuit. Which item would allow the bulb to light up if it were used to connect point A to point B?

Accepted Answer

a metal coin

Answer

a glass rod

Answer

a plastic comb

Answer

a paper cup

Question 11

Which action forms a different chemical substance?

Accepted Answer

burning a piece of wood

Answer

crushing a rock

Answer

mixing salt and pepper

Answer

melting an ice cube

Question 12

Which instrument could be used to determine the volume of an irregularly shaped solid?

Accepted Answer

(Image of a graduated cylinder labeled 'mL')

Answer

(Image of a ruler)

Answer

(Image of a thermometer)

Answer

(Image of a stopwatch)

Question 13

When carbon and oxygen combine chemically, the mass of the product is

Accepted Answer

equal to the mass of the carbon plus the mass of the oxygen

Answer

greater than the mass of the carbon plus the mass of the oxygen

Answer

equal to the mass of the carbon

Answer

less than the mass of the carbon

Question 14

Base your answer to the question on the information below and on your knowledge of science. A baseball strikes the roof of a car and dents it. The paint on the roof begins to crack and chip, exposing the metal. The exposed metal on the roof rusts, eventually causing a small hole in the roof. Which event is a chemical change?

Accepted Answer

The exposed metal rusts.

Answer

The baseball strikes the roof.

Answer

The roof of the car dents.

Answer

The paint cracks and chips.

Question 15

Which process is an example of a physical change?

Accepted Answer

ice melting

Answer

wood burning

Answer

iron rusting

Answer

milk souring

Question 16

The diagram below shows a model of a sample of gas particles at room temperature. Which diagram best shows the results of removing heat from this sample until it freezes?

Accepted Answer

B. [Image B]

Answer

A. [Image A]

Answer

C. [Image C]

Answer

D. [Image D]

Question 17

A student is trying to dissolve 20 grams of sugar in a beaker containing 250 milliliters of water at room temperature. What can the student do to make the sugar dissolve faster in the water?

Accepted Answer

stir rapidly

Answer

decrease the temperature of the water

Answer

use larger pieces of sugar

Answer

use less water

Question 18

The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they

Accepted Answer

react in similar ways

Answer

are metals

Answer

have the same atomic mass

Answer

are noble gases

Question 19

Water (H2O) is not found on the Periodic Table of the Elements because water is

Accepted Answer

a compound

Answer

an atom

Answer

a liquid

Answer

a mixture

Question 20

Which process is represented by B?

Accepted Answer

freezing

Answer

condensing

Answer

evaporating

Answer

melting

Question 21

Base your answers to the questions on the diagram below and on your knowledge of science. The diagram represents four processes, labeled A, B, C, and D, that occur when water changes phase. Which two processes increase the motion of the molecules?

Accepted Answer

D. D and A

Answer

A. A and B

Answer

B. B and C

Answer

C. C and D

Question 22

One example of matter is

Accepted Answer

water

Answer

magnetism

Answer

heat

Answer

radiation

Question 23

Which element is classified as a noble gas?

Accepted Answer

argon

Answer

sulfur

Answer

oxygen

Answer

nitrogen

Question 24

Elements on the Periodic Table of the Elements are classified into categories such as

Accepted Answer

metals and nonmetals

Answer

rocks and minerals

Answer

molecules and atoms

Answer

mixtures and compounds

Question 25

Energy from the Sun reaches Earth mainly by the process of

Accepted Answer

radiation

Answer

conduction

Answer

convection

Answer

reflection

Question 26

Magnets A and B are of equal magnetic strength. In which position will magnets A and B have the greatest attractive force toward each other?

Accepted Answer

[A: S N, B: N S]

Answer

[A: S N, A: S N]

Answer

[A: S N, A: S N]

Question 27

The diagram below shows a boulder rolling down a hill into a valley and then up the opposite hill. At which position does the boulder have the greatest kinetic energy?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 28

The diagram below shows a pinwheel rotating above a lit candle. The arrows indicate the direction of air flow.

Accepted Answer

heat to mechanical

Answer

mechanical to light

Answer

sound to heat

Answer

heat to sound

Question 29

Base your answers to the questions on the diagrams below and your knowledge of science. The diagrams show liquid water changing to water vapor in four different situations. Which observation would be evidence that the water is undergoing a phase change?

Accepted Answer

The water level in the glass of water decreases.

Answer

Waves form on the top of the pond.

Answer

Water soaks into the wet sand.

Answer

The water splashes out of the swimming pool.

Question 30

Base your answers to the questions on the diagram below, which shows two insulated Styrofoam cups of water connected by an aluminum bar. The thermometers show the temperature of the water in cup A and cup B at the beginning of a heat-flow experiment. Over the next 15 minutes, which changes would most likely occur?

Accepted Answer

The temperature in cup A will decrease and the temperature in cup B will increase.

Answer

The temperature in cup A will decrease and the temperature in cup B will decrease.

Answer

The temperature in cup A will increase and the temperature in cup B will increase.

Answer

The temperature in cup A will increase and the temperature in cup B will decrease.

Question 31

Base your answers to the questions on the diagram below, which shows two insulated Styrofoam cups of water connected by an aluminum bar. The thermometers show the temperature of the water in cup A and cup B at the beginning of a heat-flow experiment. Which process is most responsible for the temperature changes that will take place?

Accepted Answer

conduction of heat through the aluminum bar

Answer

radiation of heat from the water in the cups to the thermometers

Answer

radiation of heat from the water in the cups into the air

Answer

conduction of heat through the air to the water in the cups

Question 32

During which phase change is heat energy absorbed by a substance?

Accepted Answer

liquid to gas

Answer

gas to solid

Answer

liquid to solid

Answer

gas to liquid

Question 33

The diagram below shows a bar magnet. Points A, B, C, and D are locations on the magnet. Which position on the bar magnet would have the strongest attraction to the north pole of another bar magnet?

Accepted Answer

A. A

Answer

B. B

Answer

C. C

Answer

D. D

Question 34

The diagram below shows a Bunsen burner heating a beaker of water on a beaker stand. The arrows represent the transfer of heat energy in the water. Which process is primarily responsible for the transfer of heat indicated by the arrows in the beaker of water?

Accepted Answer

convection

Answer

conduction

Answer

radiation

Answer

condensation

Question 35

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

Accepted Answer

Kinetic energy increases and potential energy decreases.

Answer

Kinetic energy decreases and potential energy increases.

Answer

Both potential energy and kinetic energy decrease.

Answer

Both potential energy and kinetic energy increase.

Question 36

Which example best demonstrates the process of conduction?

Accepted Answer

C. A metal spoon gets warm when used to stir hot soup.

Answer

A. A piece of paper is torn in half.

Answer

B. Warmed air rises above a lit candle.

Answer

D. Sunlight brightens a dark room.

Question 37

A boy pulls a sweater off over his head. His hair is attracted to the sweater due to

Accepted Answer

an electrical charge

Answer

a magnetic force

Answer

a heat transfer

Answer

a chemical change

Question 38

A person uses a bow to shoot an arrow at a target. In which diagram does the bow and arrow have the greatest amount of potential energy?

Accepted Answer

D. [Image of person pulling bow fully, ready to release]

Answer

A. [Image of person standing with bow and arrow on table]

Answer

B. [Image of person pulling bow halfway]

Answer

C. [Image of person pulling bow further]

Question 39

The diagram below shows two magnets. If the magnets are brought closer together, they will

Accepted Answer

attract each other with a stronger force

Answer

attract each other with a weaker force

Answer

repel each other with a stronger force

Answer

repel each other with a weaker force

Question 40

Which process transfers heat when particles collide in a solid?

Accepted Answer

conduction

Answer

convection

Answer

radiation

Answer

evaporation

Question 41

The diagram below represents two cans of water at the same temperature. One can is painted black and the other can is painted white. The cans are placed on a sunny windowsill, and a thermometer is placed in each can to measure the water temperature. After four hours in the sunlight, the temperatures of the water in the cans will most likely be

Accepted Answer

higher in the black can than in the white can

Answer

the same as when the cans were placed there

Answer

higher, with the same temperature in both cans

Answer

higher in the white can than in the black can

Question 42

The diagram below represents a thermometer. Which principle best explains how this thermometer works?

Accepted Answer

C. A liquid expands when heated and contracts when cooled.

Answer

A. A liquid changes to a gas when heated.

Answer

B. A gas changes to a liquid when heated.

Answer

D. A liquid contracts when heated and expands when cooled.

Question 43

According to the periodic table, how many neutrons are in a potassium atom that has an atomic mass of 41?

Accepted Answer

22

Answer

19

Answer

20

Answer

39

Question 44

According to the periodic table, the neutral atom of what element has 4 protons, 5 neutrons, and 4 electrons?

Accepted Answer

beryllium

Answer

boron

Answer

fluorine

Answer

aluminum

Question 45

Which sentence about the periodic table of elements is true?

Accepted Answer

Metals are found on the left side of the periodic table.

Answer

All elements in period 2 are metals.

Answer

All elements in group 18 are metals.

Answer

Metals are found on the right side of the periodic table.

Question 46

Which class of elements best conducts electricity?

Accepted Answer

metals

Answer

nonmetals

Answer

semimetals

Answer

noble (inert) gases

Question 47

Copper (Cu) reacts with oxygen (O) to form copper oxide (CuO). The properties of CuO are most likely

Accepted Answer

different from copper or oxygen.

Answer

similar to both copper and oxygen.

Answer

similar only to copper.

Answer

similar only to oxygen.

Question 48

Why is cobalt (Co) placed before nickel (Ni) on the periodic table of the elements even though it has a higher average atomic mass than nickel?

Accepted Answer

Nickel has one more proton.

Answer

Cobalt was discovered first.

Answer

Nickel has fewer electrons.

Answer

Cobalt has a lower density.

Question 49

Which of the following best describes an atom?

Accepted Answer

a core of protons and neutrons surrounded by electrons

Answer

protons and electrons grouped together in a random pattern

Answer

protons and electrons grouped together in an alternating pattern

Answer

a core of electrons and neutrons surrounded by protons

Question 50

Which of the following is found farthest from the center of an atom?

Accepted Answer

electron

Answer

nucleus

Answer

proton

Answer

neutron

Question 51

Which of the following atoms has six valence electrons?

Accepted Answer

sulfur (S)

Answer

magnesium (Mg)

Answer

silicon (Si)

Answer

argon (Ar)

Question 52

Which element will gain only one electron during a chemical reaction?

Accepted Answer

chlorine

Answer

silicon

Answer

phosphorus

Answer

sulfur

Question 53

Which of the following is the same for both hydrogen and potassium?

Accepted Answer

number of valence electrons

Answer

atomic mass

Answer

total mass of neutrons

Answer

number of filled energy levels

Question 54

The circles and dots in the boxes below represent atoms of two different elements. Atoms touching each other are considered bonded to each other. Which box contains a mixture?

Accepted Answer

C. C

Answer

A. A

Answer

B. B

Answer

D. D

Question 55

The drawing above shows a kernel of corn that is heated to make popcorn. Which of the following best explains what happens to the drop of liquid water inside the kernel of corn during this process?

Accepted Answer

The liquid water undergoes a physical change into steam.

Answer

The liquid water is destroyed by the heat.

Answer

The liquid water is converted into heat.

Answer

The liquid water undergoes a chemical change into hydrogen and oxygen.

Question 56

When an electric fan is running, most of the incoming electrical energy changes into which kind of energy?

Accepted Answer

mechanical energy

Answer

heat energy

Answer

light energy

Answer

sound energy

Question 57

When a light bulb is turned on, energy changes from one form to another. Which of the following best describes this change?

Accepted Answer

electrical energy to light energy

Answer

sound energy to light energy

Answer

nuclear energy to light energy

Answer

magnetic energy to light energy

Question 58

Which type of energy transfer occurs when a beaker of water is heated on a hot plate?

Accepted Answer

electrical to heat

Answer

light to heat

Answer

chemical to heat

Answer

magnetic to heat

Question 59

The picture below shows the melting of an ice cube. The ice cube changed because it

Accepted Answer

warmed.

Answer

cooled.

Answer

hardened.

Answer

evaporated.

Question 60

A scientist uses an instrument to observe the pattern of molecules in a substance. What state of matter is the scientist most likely observing?

Accepted Answer

solid

Answer

gas

Answer

liquid

Answer

vapor

Question 61

Within a substance, atoms that collide frequently and move independently of one another are most likely in a

Accepted Answer

gas.

Answer

liquid.

Answer

solid.

Answer

crystal.

Question 62

Which of the following can carry light waves but not sound waves?

Accepted Answer

vacuum

Answer

air

Answer

steel

Answer

water

Question 63

The diagram below shows an object made from a battery, a nail, and some wire. What will happen if you touch a metal paperclip to the nail?

Accepted Answer

The paperclip will stick to the nail.

Answer

The wires will melt.

Answer

The battery will spark.

Answer

The nail will give you a shock.

Question 64

A balloon has a negative charge. A glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?

Accepted Answer

The balloon will be attracted to the rod.

Answer

The balloon will be repelled by the rod.

Answer

The balloon will remain in place.

Answer

The balloon will spin in circles.

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