Chemical Reactions Unit

Quiz
•
Science
•
8th Grade
•
Hard
+3
Standards-aligned
Charles Martinez
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A material used to decrease the rate of a chemical reaction...
Fuel
Enzyme
Catalyst
Inhibitor
Tags
NGSS.HS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which describes a physical change?
Milk left out developing an odor
wood logs burning
Coconut oil freezing after being placed in the freezer
Elements mixed to form salt
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Law of conservation of mass is true for...
reactions in open systems only
reactions in open and closed systems
reactions in closed systems only
no reactions
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What happens when a chemical bonds break and new bonds form?
a chemical change
matter is destroyed
surface are increases
a physical change
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A shorter way to show a chemical reaction, using symbols instead of words, is called a
symbol
subscript
Chemical Equation
chemical formula
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
which two of these are opposites?
precipitate and synthesis reaction
single replacement and double replacement
decomposition and single replacement reaction
synthesis and decomposition reaction
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A chemical reaction that absorbs energy in the form of heat is described as ...
unbalanced
endothermic
exothermic
combustion
Tags
NGSS.MS-PS1-4
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