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Chemical Reactions

Authored by Mr. Bob

Chemistry, Physics

7th - 9th Grade

NGSS covered

Used 5+ times

Chemical Reactions
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26 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a ___________change, a substance changes into a different substance.

Physical
Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is NOT a sign that a chemical change has occurred? 

A loss of transparency 
An unexpected color change
A temperature change
The formation of a precipitate

Tags

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?

Reactants
Products
Atoms
Catalysts

Tags

NGSS.MS-PS1-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Law of Conservation of Mass states

that matter exists in all states and reacts the same
that matter can only be changed into new substances by introducing a catalyst
that matter exists in the same state throughout any chemical change
that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Tags

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

a copper penny turning greenish after a few years.

Chemical Change
Physical Change

Tags

NGSS.MS-PS1-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following IS a physical change?

Getting a haircut
Rusty metal
sour milk
A compound

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemical change is different than a physical change because in a chemical change

Chemicals are used
Molecules do not physically touch
A new substance is formed and in a physical change no new substance is formed
The change can be seen but in a physical change it cannot

Tags

NGSS.MS-PS1-2

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