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Chemical Reactions
Test Description: Chemical Reaction Types, Reactants and Products
Instructions: Answer all questions to get your test result.
1) What type of chemical reaction breaks things down?
A
decomposition
B
synthesis
C
replacement
D
double replacement
2) What kind of chemical reaction puts things together?
A
combustion
B
synthesis
C
decomposition
D
replacement
3) What kind of chemical reaction has one element replacing another element?
A
synthesis
B
replacement
C
decomposition
D
double replacement
4) The small number that is lower and to the right of the element symbol is called the
A
formula
B
subscript
C
superscript
D
coefficient
5) If an elemental symbol does not have a subscript, you assume that the number is
A
0
B
an error
C
2
D
1
6) The materials you start with in a chemical reaction are called the
A
coefficients
B
products
C
reactants
D
chemical formulas
7) The materials you end up with in a chemical reaction are the
A
solvents
B
reactants
C
coefficients
D
products
8) Conservation of mass in chemistry tells us
A
Matter can be created, but not destroyed.
B
Mass should never be wasted.
C
Matter is not created or destroyed during a chemical reaction.
D
Conserve resources when experimenting
9) The number in front of a chemical formula that tells how many molecules are in a chemical reaction is a
A
coefficient
B
subscript
C
prime factor
D
superscript
10) Symbols showing a chemical reaction is a
A
chemical equation
B
chemical formula
C
chemical symbol
D
chemical hazard
11) In the chemical formula: 2CO , the 2 is called the
A
subscript
B
coefficient
C
symbol
D
superscript
*select an answer for all questions
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