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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
double replacement
C
synthesis
D
replacement
2) What kind of chemical reaction puts things together?
A
synthesis
B
combustion
C
decomposition
D
replacement
3) What kind of chemical reaction has one element replacing another element?
A
replacement
B
synthesis
C
double replacement
D
decomposition
4) The small number that is lower and to the right of the element symbol is called the
A
subscript
B
superscript
C
coefficient
D
formula
5) If an elemental symbol does not have a subscript, you assume that the number is
A
1
B
2
C
an error
D
0
6) The materials you start with in a chemical reaction are called the
A
reactants
B
products
C
coefficients
D
chemical formulas
7) The materials you end up with in a chemical reaction are the
A
coefficients
B
solvents
C
products
D
reactants
8) Conservation of mass in chemistry tells us
A
Mass should never be wasted.
B
Matter can be created, but not destroyed.
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
subscript
B
coefficient
C
superscript
D
prime factor
10) Symbols showing a chemical reaction is a
A
chemical equation
B
chemical formula
C
chemical hazard
D
chemical symbol
11) In the chemical formula: 2CO , the 2 is called the
A
subscript
B
superscript
C
coefficient
D
symbol
*select an answer for all questions
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