Question 1

Which of the following is an example of a chemical change?

Accepted Answer

Burning wood

Answer

Cutting paper

Answer

Pulling a rubber band

Answer

Melting ice

Question 2

Which of the following is an example of a physical change?

Accepted Answer

Crushing a can

Answer

Digesting food

Answer

Baking a cake

Answer

Rusting of iron

Question 3

When a metal reacts with an acid, what type of change does it undergo?

Accepted Answer

Chemical change

Answer

Phase change

Answer

Mechanical change

Answer

Physical change

Question 4

What happens during a chemical reaction?

Accepted Answer

Bonds between atoms are broken and new bonds are formed

Answer

The total mass of the substances involved remains constant

Answer

Only physical properties of substances change

Answer

No energy is involved

Question 5

Which of the following is a characteristic of a chemical change?

Accepted Answer

Formation of gas

Answer

Change in shape

Answer

Change in temperature

Answer

Change in texture

Question 6

Which of the following is an example of a physical change?

Accepted Answer

Melting ice

Answer

Cooking an egg

Answer

Burning a candle

Answer

Rusting a metal

Question 7

When iron rusts, what type of change does it undergo?

Accepted Answer

Chemical change

Answer

Biological change

Answer

Nuclear change

Answer

Physical change

Question 8

Which of the following is not a characteristic of a chemical change?

Accepted Answer

Changing the shape or size of a substance

Answer

Formation of new substances

Answer

Release or absorption of heat

Answer

Change in color or odor

Question 9

Which of the following is a chemical property?

Accepted Answer

reactivity

Answer

shape

Answer

color

Answer

size

Question 10

Which of the following is an example of a physical property?

Accepted Answer

melting point

Answer

reactivity

Answer

flammability

Answer

oxidation

Question 11

Which of the following is a physical property?

Accepted Answer

density

Answer

toxicity

Answer

corrosiveness

Answer

reactivity

Question 12

What is the definition of mass?

Accepted Answer

The amount of matter in an object (how heavy it is)

Answer

The color of an object

Answer

The force of gravity on an object

Answer

The speed of an object

Question 13

Which of the following best defines density?

Accepted Answer

The amount of matter in a given volume. Determines whether object float

Answer

The force exerted on an object due to gravity

Answer

The ability of an object to conduct electricity

Answer

The amount of light an object reflects

Question 14

Which of the following best defines volume?

Accepted Answer

The amount of space that a substance or object occupies

Answer

The height of a substance or object

Answer

The color of a substance or object

Answer

The weight of a substance or object

Question 15

What is the phase change in which a substance changes from a liquid to a gas?

Accepted Answer

Evaporation / Vaporization / Boiling

Answer

Melting

Answer

Condensation

Answer

Sublimation

Question 16

What phase change occurs when a substance changes from a solid to a liquid?

Accepted Answer

Melting

Answer

Condensation

Answer

Freezing

Answer

Evaporation

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