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Science

7th Grade

NGSS covered

Used 184+ times

Analyzing Chemical Equations
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What does a chemical equation use in order to model what happens in a chemical reaction?

chemical structures

chemical reactions

chemical formulas

chemical balances

Tags

NGSS.MS-PS1-5

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Media Image

What do we call the number placed in front of a chemical formula that indicates how many molecules of the substance are represented in the chemical equation?

broefficient

coefficient

products

reactants

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

What are the 3 main components of a chemical equation?

reactants

hot dogs

yield arrow

stop sign

product(s)

Tags

NGSS.MS-PS1-5

4.

FILL IN THE BLANK QUESTION

20 sec • 1 pt

Media Image

The same number and type of __________ should be present on both sides of a chemical equation.

Tags

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which chemical formula accurately represents the provided model?

pink-Na. green-Cl. yellow-S. blue-H

H2S + 2NaCl ---------->Na2S + 2NaCl

Na2S + 2NaCl ---------> Na2S + 2NaCl

2NaCl + H2S -----------> Na2S + 2NaCl

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Which chemical equation accurately represents the provided model of a chemical change?

2H2O2 -----------> O2 + 2H2O

O2 + 2H2O --------> 2H2O2

2H2O -----------> 2H2O

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

7.

FILL IN THE BLANK QUESTION

20 sec • 1 pt

Media Image

How many molecules of water were produced for this chemical equation?

Tags

NGSS.MS-PS1-5

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