Search Header Logo

Unit 6 Test: Chemical Reactions

Authored by Adrienne McCracken

Chemistry, Science

7th - 8th Grade

NGSS covered

Used 3+ times

Unit 6 Test: Chemical Reactions
AI

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

    Content View

    Student View

34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Samara put a quantity of sulfur, a yellow powder, into a test tube. She gently heated the tube and observed that the powder turned black. What happened?

The sulfur underwent a physical change called melting.

The sulfur underwent a chemical change called burning.

The sulfur underwent a chemical change called melting.

The sulfur underwent a physical change called burning.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The formula for a molecule of serotonin is show below.


C10H12N2O


How many atoms in all are in the molecule of serotonin?

25

22

10

4

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Does the following chemical equation follow the Law of Conservation of Mass?


2H2 + O2 = 2H2O

yes

no

not enough information provided

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda into the spill. Which observation would provide the best evidence that a chemical reaction occurred?

The baking soda and hydrochloric acid combined, and bubbles formed.

The baking soda absorbed the hydrochloric acid.

Some of the baking soda dissolved in the hydrochloric acid.

The hydrochloric acid evaporated, leaving only the baking soda.

Tags

NGSS.MS-PS1-2

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Which substances have the same number of carbon atoms?

Substances 1 and 2

Substances 2, 3 and 4

Substances 2 and 3 only

Substances 1 and 3

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of these example is a physical change?

Media Image
Media Image
Media Image
Media Image

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Is digestion an example of a physical change or a chemical change?

Physical Change
Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?