
Chemical Reactions
Authored by Colin Brown
Science
7th Grade
NGSS covered
Used 7+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A process in which atoms rearrange to form new substances.
extended structure
boiling point
chemical reaction
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A substance produced during a chemical reaction
Product
Reactant
Properties
Tags
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A solid formed from a solution during a chemical reaction is called a
precipitate
reactant
crystal
powder
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Select all that are true about electrolysis.
The balanced chemical equation is
2H2O --> 2H2 + O2
The balanced chemical equation is
2H2 + O2 --> 2H2O
Electrolysis is a chemical reaction.
Electrolysis is NOT a chemical reaction.
Electrolysis only has 1 reactant.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Magnesium and oxygen combine to form magnesium oxide, the magnesium and oxygen are:
products
reactants
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following are chemical reactions?
Mixing Gatorade powder and water
Combustion (burning) of wood
Boiling water
Electrolysis
Aluminum foil and Copper Chloride
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Looking at the model to the left, how do you know a reaction has happened?
There are equal numbers of each element.
New molecules have been created.
Molecules did not change.
The atoms were rearranged to form new molecules.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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