Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Ch 9, 8th Grade
Test Description: Chemical Reactions
Instructions: Answer all questions to get your test result.
1) Chemical changes do NOT result in a new substance being formed.
A
true
B
false
2) Which is a sign that a chemical reaction is taking place?
A
the release of light and sound
B
fizzing/bubbling
C
all of the above
D
a change in color
3) How do you know for sure that a chemical reaction is taking place?
A
a change in temperature
B
studying the substance before and after the reaction
C
the presence of bubbles
D
all of the above
4) What happens in a chemical reaction?
A
atoms rearrange and form new substances
B
a substance changes physical properties only
C
substances retain all their original properties
D
all of the above
5) The substances to the left of the arrow in a chemical equation are called the
A
reactants
B
coefficients
C
products
D
subscripts
6) The total mass before a chemical reaction is the same after a chemical reaction. This is the law of
A
conservation of reactants
B
conservation of temperature
C
conservation of energy
D
conservation of mass
7) Whose research contributed to the law of conservation of mass?
A
Marie and Pierre Curie
B
Henri Becquerel
C
Anton von Leeuwenhoek
D
Antoine Lavoisier
8) A number placed in front of an element symbol or chemical formula is called a
A
product
B
reactant
C
subscript
D
coefficient
9) A reaction in which two or more substances combine and form one compound is called a
A
decomposition
B
double replacement
C
synthesis
D
single replacement
10) A reaction in which a single reactant breaks down into two or more products is called a
A
single replacement
B
decomposition
C
combustion
D
double replacement
11) Negative ions in 2 compounds switch places in which kind of reaction?
A
double replacement
B
single replacement
C
synthesis
D
combustion
12) What happens to energy when a chemical bond is broken?
A
it is absorbed
B
it is released
C
it is destroyed
D
it is created
13) In an exothermic reaction, energy is...
A
destroyed
B
released
C
created
D
absorbed
14) The minimum amount of energy needed to start a chemical reaction is called
A
starting energy
B
reaction energy
C
beginning energy
D
activation energy
15) We can make a chemical reaction occur faster if we
A
increase the temperature
B
increase the surface area
C
all of the above
D
increase the concentration
16) When a catalyst is added to a reaction, it is considered a reactant.
A
False
B
True
17) A catalyst that speeds up chemical reactions in living cells is called a(n)
A
inhibitor
B
hormone
C
preservative
D
enzyme
18) A preservative is an example of a(n)
A
protein
B
enzyme
C
inhibitor
D
catalyst
19) A description of a reaction using element symbols and chemical formulas is called a
A
chemical reaction
B
chemical equation
C
chemical symbol
D
chemical formula
20) A reaction that absorbs energy is called
A
absorbothermic
B
endothermic
C
exothermic
D
thermal
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?