Chemical Reactions Unit

Chemical Reactions Unit

8th Grade

20 Qs

quiz-placeholder

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Chemical Reactions Unit

Chemical Reactions Unit

Assessment

Quiz

Science

8th Grade

Hard

NGSS
MS-PS1-5, MS-PS1-2, MS-PS1-4

+3

Standards-aligned

Created by

Charles Martinez

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A material used to decrease the rate of a chemical reaction...

Fuel

Enzyme

Catalyst

Inhibitor

Tags

NGSS.HS-PS1-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which describes a physical change?

Milk left out developing an odor

wood logs burning

Coconut oil freezing after being placed in the freezer

Elements mixed to form salt

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Law of conservation of mass is true for...

reactions in open systems only

reactions in open and closed systems

reactions in closed systems only

no reactions

Tags

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens when a chemical bonds break and new bonds form?

a chemical change

matter is destroyed

surface are increases

a physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A shorter way to show a chemical reaction, using symbols instead of words, is called a

symbol

subscript

Chemical Equation

chemical formula

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

which two of these are opposites?

precipitate and synthesis reaction

single replacement and double replacement

decomposition and single replacement reaction

synthesis and decomposition reaction

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A chemical reaction that absorbs energy in the form of heat is described as ...

unbalanced

endothermic

exothermic

combustion

Tags

NGSS.MS-PS1-4

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