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Chemical Reactions 1
Test Description: Chemical equations
Instructions: Answer all questions to get your test result.
1) What type of chemical reaction has 2 or more reactants and only 1 product?
A
replacement
B
synthesis
C
decomposition
2) What type of reaction has 1 reactant and 2 or more products?
A
decomposition
B
synthesis
C
replacement
3) A chemical reaction that releases energy in the form of light or heat
A
endothermic
B
decomposition
C
replacement
D
exothermic
4) A solid that can form when 2 liquids react
A
crystalline
B
amorphous
C
combustion
D
precipitate
5) Which of the following is NOT a sign of a chemical change?
A
change in state
B
gas is produced
C
precipitate forms
D
change in color
6) 30g of substance A + 50g of substance B form how many grams of new susbtance?
A
1500g
B
50g
C
20g
D
80g
7) Energy that is required to start a reaction
A
inhibitor
B
activation energy
C
chemical energy
D
light energy
8) A chemical that is used to SPEED up the rate of a reaction.
A
catalyst
B
exothermic
C
endothermic
D
inhibitor
9) Substances at the beginning of a reaction, before the arrow
A
reactants
B
products
10) substances that are formed in a reaction, after the arrow
A
decomposition
B
products
C
synthesis
D
reactants
*select an answer for all questions
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