Quiz about Chemical Reactions vs Physical Changes

Question 1

Any time something burns, it is going through a

Accepted Answer

chemical change

Answer

physical change

Question 2

A copper penny turning green after a few years is an example of ...

Accepted Answer

Chemical Change

Answer

Physical Change

Question 3

What happens in ALL chemical changes?

Accepted Answer

A new product is formed

Answer

Change in state of matter

Answer

Bubbles are produced

Answer

An explosion

Question 4

Is milk going sour a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 5

When baking soda and vinegar mix it creates a bubbly mess. Is this a chemical or physical change?

Accepted Answer

Chemical

Answer

Physical

Question 6

A change in which NEW substances are formed.

Accepted Answer

Chemical change

Answer

Physical change

Answer

Casual change

Answer

Formal change

Question 7

________ result(s) in no new substances.

Accepted Answer

A physical change

Answer

A chemical change

Answer

Physical and chemical changes

Answer

None of the above

Question 8

________ result(s) in no new substances.

Accepted Answer

physical change

Answer

chemical change

Answer

Physical and chemical changes

Answer

None of the above

Question 9

Is making orange juice a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 10

Is sharpening a pencil a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 11

Is bending copper wire a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 12

Hard-boiled eggs are the a result of a chemical change because

Accepted Answer

the eggs have different properties (smell, taste, color) before vs after.

Answer

the eggs are the same size before vs after.

Answer

the eggs weigh the same before vs after.

Answer

the eggs went through a phase change.

Question 13

Is melting butter a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 14

Blending together ingredients into a smoothie is what kind of change?

Accepted Answer

physical change

Answer

chemical change

Answer

both types of changes

Answer

none of these

Question 15

Which of these is true about a chemical change? (Choose all correct answers.)

Accepted Answer

The number of atoms in the reaction stays the same.

Accepted Answer

New materials are formed with different chemical properties.

Accepted Answer

Molecules are broken apart and/or new molecules are formed.

Answer

The reactants are the same as the products.

Question 16

On a camping trip, Mr. Markowitz roasts a marshmallow in the campfire. He notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What change has taken place AND how does Mr. Markowitz know?

Accepted Answer

A chemical change because the marshmallow changed in taste, color, and smell

Answer

A chemical change because the marshmallow was heated up.

Answer

Only a physical change because the marshmallow changed in size

Answer

No change because the marshmallow is not a new substance

Question 17

The end results of a chemical reaction are called

Accepted Answer

products

Answer

reactants

Answer

explosion

Answer

a pile of goo

Question 18

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

Accepted Answer

C) Change in state

Answer

A) Formation of a new substance

Answer

B) Change in color

Answer

D) Release of gas

Question 19

What is always true about a chemical reaction?

Accepted Answer

B) It produces a new substance

Answer

A) It involves a change in state

Answer

C) It is reversible

Answer

D) It requires heat

Question 20

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

Accepted Answer

C) Burning wood

Answer

A) Melting ice

Answer

B) Dissolving sugar in water

Answer

D) Boiling water

Question 21

In a chemical reaction, the substances that undergo change are called:

Accepted Answer

B) Reactants

Answer

A) Products

Answer

C) Catalysts

Answer

D) Enzymes

Question 22

Which observation indicates a chemical reaction has occurred?

Accepted Answer

A) Change in temperature

Answer

B) Change in shape

Answer

C) Change in size

Answer

D) Change in texture

Question 23

What happens to the molecules in a physical change?

Accepted Answer

B) They remain the same

Answer

A) They are rearranged to form new substances

Answer

C) They are destroyed

Answer

D) They are converted into energy

Question 24

Which of the following processes is a physical change?

Accepted Answer

C) Evaporation of water

Answer

A) Rusting of iron

Answer

B) Baking a cake

Answer

D) Burning gasoline

Question 25

During a chemical reaction, what happens to the atoms of the reactants?

Accepted Answer

B) They are rearranged to form new products

Answer

A) They are destroyed

Answer

C) They disappear

Answer

D) They remain unchanged

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