Quiz about Chemical Changes Review

Question 1

which of these example is a physical change?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 2

is the picture chemical or physical

Accepted Answer

<p>chemical</p>

Answer

<p>physical</p>

Question 3

which one is not an indicator of a chemical change

Accepted Answer

formation of liquid

Answer

formation of gas

Answer

formation of a solid

Answer

change of colour

Answer

change in temperature

Question 4

what is a physical change

Accepted Answer

its when a transformation doesn't change the nature of the molecules in matter

Answer

its when a transformation change the nature of the molecules in matter

Answer

its when a transformation change the nature of the molecules in substance

Question 5

1. Sugar dissolves in warm water

Accepted Answer

Physical change

Answer

Chemical Change

Question 6

4. A piece of paper burns.

Accepted Answer

Chemical Change

Answer

Physical Change

Question 7

8. Water boils at 100 degrees Celsius

Accepted Answer

Physical Change

Answer

Chemical Change

Question 8

What kind of change is frying an egg?

Accepted Answer

Option B is correct

Answer

A.

Question 9

What kind of change is a melting popsicle?

Accepted Answer

Option A is correct

Answer

B.

Question 10

What kind of change is baking a cake?

Accepted Answer

Option B is correct

Answer

A.

Question 11

What kind of change is freezing water into ice cubes?

Accepted Answer

Option A is correct

Answer

B.

Question 12

What kind of change is mixing vinegar & baking soda?

Accepted Answer

Option B is correct

Answer

A.

Question 13

Luster

Accepted Answer

Physical property

Answer

Chemical property

Question 14

Chemical Reaction

Accepted Answer

the process in which substances undergo chemical changes that result in the formation of new substances

Answer

a substance formed as a result of a chemical reaction

Answer

a change in matter that produces one or more new substances

Answer

a substance that enters into a chemical reaction

Question 15

Which is a PURE substance composed of the SAME type of atom

Accepted Answer

element

Answer

atom

Answer

substance

Question 16

A substance made of TWO or more elements that are CHEMICALLY combined in fixed amounts is...

Accepted Answer

Compound

Answer

Substance

Answer

Element

Question 17

A CHANGE that alters (changes) the identity of a substance and results in a NEW substance with DIFFERENT properties.

Accepted Answer

Chemical Change

Answer

Physical Change

Question 18

A CHANGE to a substance that occurs without forming a NEW substance, such as change of size or state of matter.

Accepted Answer

Physical Change

Answer

Chemical Change

Question 19

Evidence of the release of energy during a CHEMICAL CHANGE is...

Accepted Answer

Production of Heat or Light

Answer

Production of Precipitate

Answer

Production of Gas

Question 20

Evidence of a NEW substance formed from a chemical change is...

Accepted Answer

Production of Gas

Answer

Production of Heat and Light

Answer

Production of a Precipitate

Question 21

Evidence of a NEW substance formed from a chemical change, resulting in SOLID particles that form or separate out of a liquid is...

Accepted Answer

Production of a Precipitate

Answer

Production of Heat or Light

Answer

Production of Gas

Question 22

INCREASE or DECREASE of heat energy in a substance may be evidence of a NEW substance formed during a chemical change because of...

Accepted Answer

Temperature Change

Answer

Color Change

Answer

No change at all

Question 23

A change in the way something reflects LIGHT, and can indicate a chemical change is known as...

Accepted Answer

Color Change

Answer

Temperature Change

Answer

No Change

Question 24

A student stirs two liquids together and they turn into a solid. What type of change has happened and why?

Accepted Answer

chemical, because a new substance was formed

Answer

chemical, because a change instate of matter always means a chemical change

Answer

physical, because it was stirred

Question 25

Which of the following is a sign that a chemical reaction has occurred?

Accepted Answer

formation of a gas

Answer

change in shape

Answer

melting

Answer

dissolving

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