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Chemical Reactions Introduction

Authored by Physical Science

Science

9th Grade

NGSS covered

Used 16+ times

Chemical Reactions Introduction
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Count the atoms on the reactant and product sides of the chemical equation. Is this chemical equation balanced (equal amount of atoms) or unbalanced (unequal amount of atoms)?

balanced

unbalanced

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A chemical reaction is also called a chemical change.

true

false

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

During a chemical reaction, reactant atoms(mass) are _________ to the product atoms(mass).

equal

different

more

less

Tags

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What does a chemical equation represent?

matter classification

chemical reactions

isotopes

neutral atoms

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Does the chemical equation represent an Endothermic or Exothermic reaction?

endothermic

exothermic

Tags

NGSS.MS-PS1-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

______ are the are the number of molecules that appear before the chemical formulas.

Subscripts

Mass numbers

Coefficients

Atomic numbers

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Does the chemical equation represent an Endothermic or Exothermic reaction?

endothermic

exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

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