What is a chemical change?

When two or more substances combine to make a new chemical substance

When two or more substances combine to make a greater one

When coffee is poured into a cup of ice, the ice begins to melt and mix with the coffee. Which statement best describes this change?

The ice melting is a physical change because the water may be frozen again.

The ice melting is a chemical change because the water changes form.

The water and coffee mixing is a chemical change because the liquids change color.

The water and coffee mixing is a physical change because the mixture forms bubbles.

Cutting a tree limb into logs is (a)____________ and burning them in the fireplace is (b)____________.

(a) A Physical Change (b) A Chemical Change

(a) A Physical Change (b) Also a Physical Change

(a) A Chemical Change (b) Also a Chemical Change

(a) A Chemical Change (b) A Physical Change

When lithium metal is dropped into a container of water, the lithium sparks and fizzes and the water begins to bubble violently. The conclusion that can be drawn from that is:

A new substance is created because this is a chemical change.

No new substances are created because there is a chemical change.

No new substances are created because this is a physical change.

A new substance is created because this is a physical change.

Which of the following is a chemical change?

Mixing two clear liquids and forming a blue liquid

Mixing a clear liquid and white solid and getting a clear liquid

Mixing a clear liquid and a dark purple solid and getting a light purple liquid

Mixing a clear liquid with a white solid and getting a cloudy white liquid

Which process is a sign of a chemical change?

A rotting potato gives off a bad smell

A melting block of ice leaves a large puddle

A cloud quickly changes shape when blown by wind

A plaster statue breaks when it falls onto the floor

The substance that is dissolved into the solution.

The substance that does the dissolving in a solution.

The mixing of different substances.

The process in which neutral molecules lose or gain electrons

Y8 Chemistry chemical and physical changes

Quiz

•

Chemistry, Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-2, MS-PS1-1, MS-PS1-5

+12

Standards-aligned

Rachael Flutter

Used 68+ times

FREE Resource

80 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Contains components that are not chemically combined

Element

Compound

Mixture

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Cannot be broken down

Element

Compound

Mixture

3.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Two or more elements chemically combined

Element

Compound

Mixture

Can be separated easily

Element

Compound

Mixture

5.

MULTIPLE CHOICE QUESTION

30 sec • 10 pts

Has a formula

Element

Compound

Mixture

Has a symbol

Element

Compound

Mixture

7.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

What does this picture represent?

Element

Compound

Mixture

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