Chemical Reactions
Interactive Video
•
Chemistry, Science, Physics
•
6th - 9th Grade
•
Practice Problem
•
Hard
Wayground Content
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What distinguishes a chemical reaction from a physical change?
Atoms remain unchanged in a chemical reaction.
Atoms rearrange to form new substances in a chemical reaction.
Chemical reactions do not involve any change in substances.
Physical changes result in new substances being formed.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical equation, what do the coefficients represent?
The speed of the reaction.
The relative quantities of reactants and products.
The temperature at which the reaction occurs.
The type of reaction taking place.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What principle is followed when balancing chemical equations?
Law of conservation of mass.
Law of constant proportions.
Law of conservation of energy.
Law of increasing entropy.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which factor does NOT affect the rate of a chemical reaction?
Temperature.
Pressure.
Color of the reactants.
Concentration of reactants.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to understand reaction equations?
They are essential for understanding everyday chemical processes.
They help in predicting the color of the products.
They are used to calculate the speed of light.
They determine the taste of the products.
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