New York Science Grade 7

Section 2: Rates of Chemical Reactions

Section Quizzes - English

1
The minimum amount of energy to start any chemical reaction is called the __________ of the reaction.
A)energy requirement
B)energy of inhibition
C)energy of catalyzation
D)activation energy
2
__________ tells you how much something changes during a period of time.
A)A rate
B)Age
C)A balanced chemical equation
D)Speed
3
Most chemical reactions __________ when temperature increases.
A)slow down
B)speed up
C)stop
D)continue at the same rate
4
When iron combines with oxygen and water in the air to form rust, what substance in the reaction is the product?
A)rust
B)iron
C)oxygen
D)water
5
If electric current passes through water and initiates a reaction, what are the expected products?
A)hydrogen oxide
B)hydrogen peroxide
C)oxygen and water
D)hydrogen and oxygen
6
The amount of substance present in a certain volume is called the __________ of that substance.
A)concentration
B)chemical formula
C)atomic number
D)activation energy
7
What type of substance slows down a chemical reaction?
A)catalyst
B)enzymes
C)endotherm
D)inhibitor
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