Characteristics of Chemical Reactions
Authored by Laura Stanton
Science
7th Grade
NGSS covered
Used 79+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A chemical reaction is __________.
A change to a substance that occurs without forming a new substance, such as a change in size or state of matter
When ice melts into water
When two or more substances interact and chemically change, producing different chemical substances
When water freezes to make ice
Tags
NGSS.MS-PS1-2
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
A physical change is __________. You may choose more than one.
A change to a substance that occurs without forming a new substance, such as a change in size or state of matter
When ice melts into water
When two or more substances interact and chemically change, producing different chemical substances
When water freezes to make ice
Tags
NGSS.MS-PS1-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ice melting is a ____________________
physical change
chemical change
Tags
NGSS.MS-PS1-4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An apple rotting is a ___________.
physical change
chemical change
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metal rusting is a chemical change because ___________
there was a change in temperature
there was a change in color
there was a release of light
there was a production of gas
Tags
NGSS.MS-PS1-2
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which of the following are indicators of chemical reactions? (select all that apply)
production of gas
production of light
change in temperature
formation of a precipitate (when a solid forms from mixing two liquids)
color change
Tags
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Choose the correct statement
In chemical reactions, molecules can change through the rearrangement of their atoms
mass can be created
mass can be destroyed
Chemical reactions can occur even if new substances aren't formed
Tags
NGSS.MS-PS1-5
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