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Review - Chemical Reactions

Authored by Martin Shanley

Chemistry

9th - 12th Grade

NGSS covered

Used 6+ times

Review - Chemical Reactions
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33 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the left part of a chemical equation called?

2H2 + O2 → 2H2O

reactants

products

solutions

compounds

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the right part of a chemical equation called?

2H2 + O22H2O

reactants

products

solutions

compounds

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the little number after an element in a chemical equation called?

Example: H2

coefficient

atom

subscript

multiplier

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the number before a chemical equation called?

Example: 2H2 + O2 2H2O

coefficient

atom

subscript

multiplier

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemical equation is balanced when ...

the subscripts of the reactants equal the subscripts of the products

the coefficients of the reactants equal the coefficients of the products

the number of atoms in the reactants equal the number of atoms in the products

the reactants are the same chemicals as the products

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In order to balance a chemical equation, what are the smaller numbers that you CANNOT change the value for?

coefficients

subscripts

reactants

products

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In order to balance a chemical equation, what are the ONLY numbers that you CAN change the value for?

coefficients

subscripts

reactants

products

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