Chemical Reactions Key Concepts Bell Ringer
Quiz
•
Chemistry
•
7th Grade
•
Medium
Autumn James
Used 12+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the starting substances in a chemical reaction called?
Reactants
Atoms
Products
Properties
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a chemical reaction, do atoms change from one type to another?
Not sure
Sometimes
No
Yes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the atoms during a chemical reaction?
They change from one type to another
They rearrange to form products
They disappear
They become larger
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Do the new substances formed in a chemical reaction have the same properties as the old substances?
Not sure
Sometimes
No
Yes
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Can atoms be created or destroyed during a chemical reaction?
Yes
No
Sometimes
Not sure
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Law of Conservation of Mass?
The total mass of the reactants is not related to the total mass of the products
The total mass of the reactants is greater than the total mass of the products
The total mass of the reactants is less than the total mass of the products
The total mass of the reactants is equal to the total mass of the products
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do scientists analyze to determine if a chemical reaction has occurred?
Melting point
Boiling point
Density
All of the above
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