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Chemical Reactions

Authored by Brandon Lilly

Science

7th Grade

NGSS covered

Used 27+ times

Chemical Reactions
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

True or False
In a chemical reaction, no new atoms are created, and no atoms are destroyed. 

true
false

Tags

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The left side of the equation below is called

Products
Reactants

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The right side of the equation below is called the

products
reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a sign of a chemical reaction? 

Color changes
Cutting into fourths
Light is produced
Gas is formed

Tags

NGSS.MS-PS1-2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a chemical reaction

The atoms of the reactants always stay together to form the products
The atoms of the reactants unbond, rearrange, and then rebond to form the products
New atoms are formed which combine to make the products
Some atoms disappear while others multiply to form the products

Tags

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The diagram above shows the repeating groups of atoms that make up two samples. Both samples are red powdery solids at room temperature. Will the other properties of the two samples be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)

The other properties will be different because there are more repeating groups of atoms in Sample 1.

The other properties will be the same because both samples are red at room temperature.

The other properties will be the same because both samples are powdery solids at room temperature.

The other properties will be same because the repeating groups of atoms that make up the two samples are the same.

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is a reactant?

Something that actanats again

A starting substance before a chemical reaction

A potato

What happens when you have the reflexes of a ninja and can react quickly.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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