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Chemical Changes

Authored by Charles Martinez

Chemistry

9th - 11th Grade

NGSS covered

Chemical Changes
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20 questions

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1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which lab experiments below describe a situation where a chemical change has occurred? Check all that apply.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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 hydochloric acid.

The hydrochloric acid evaporated, leaving only the baking soda. 

Tags

NGSS.MS-PS1-2

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

What key words, when present in a question about chemical reactions, might indicate a chemical change is occuring? Check all that apply.

Bubbling

Fizzing

Dissolving

Evaporating

Tags

NGSS.MS-PS1-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

One of the original compounds came out of solution

The solutions reacted chemically

Some of the water froze into ice crystals

Rapid evaporation of water occured, leaving a solid

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which of the following does NOT indicate a chemical reaction is occuring? Check all that apply.

Unknown A dissolves into Unknown B

Unknown A creates fizzing and bubbles when combined with Unknown B

Unknown A sinks to the bottom when added to Unknown B

Unknown A floats to the top when added to Unknown B

Tags

NGSS.MS-PS1-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which scientific observation, shown in the chart, indicates that a chemical reaction has NOT occurred?

Number 1

Number 2

Number 3

Number 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The shape of the coal changes

Oxygen is present

A new substance is produced

Coal is made up of more than one element

Tags

NGSS.MS-PS1-2

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