Chemical reactions
Authored by Jessica Watkins
Science, Chemistry
7th - 10th Grade
Used 20+ times
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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following is a characteristic of a chemical change?
Light being given off
Change of state
Change of shape
Change of size
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following is a characteristic of Physical change?
Light being given off
Heat being given off
Bubbles appearing
Change of state
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an exothermic reaction?
Heat is taken in from the external environment by the chemical reaction and temperature decreases
Heat is given off to the external environment by the chemical reaction and the temperature increases.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an endothermic reaction?
Heat is taken in from the external environment by the chemical reaction and temperature decreases
Heat is given off into the external environment by the chemical reaction and temperature increases
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the chemicals entering a chemical reaction called?
Reactors
Reactants
Products
Elements
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the chemicals made as a result of a chemical reaction called?
Reactors
Reactants
Products
Elements
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the arrow labelled A represent?
Product energy
Activation energy
Reactant energy
Final energy
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