Chemical Reactions
Quiz
•
English, Chemistry, Science
•
Professional Development
•
Hard
Irene Lahoz
Used 91+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a chemical reaction?
a process of bonding substances together
a process that leads to filled valence shells
a process that releases or consumes energy
all of the choices
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a chemical equation?
a diatomic molecule
a shorthand representation of a chemical bond
a shorthand representation of a chemical reaction
a substance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are substances on the left side of a chemical equation called?
electrons
groups
products
reactants
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are substances on the right side of a chemical equation called?
electrons
groups
products
reactants
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the number in front of the molecular symbol mean?
It shows that there is only one molecule present in a reaction
It shows the number of molecules in the reaction
It shows the number of reactions that took place
All of the choices
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Can the subscripts in a chemical reaction be changed?
Cannot be determined
Maybe, depending on the energy released
No, they define the molecules in the reaction
Yes, to balance the equation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chemical reactions proceed under the law of definite proportions:
always
cannot be determined
never
sometimes
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