Chemical Reactions
Authored by Bereket Tesfay
Other Sciences
6th - 9th Grade
Used 4K+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When a scientist mixed two chemicals, an exothermic reaction takes place. Which of the following would be proof that the reaction was exothermic?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What types of reactions absorb and release heat?
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A scientist combines chemicals and produces an exothermic reaction. What byproduct of this reaction would show that it is exothermic?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is a chemical change?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the reaction methane + oxygen turns into carbon dioxide + water, the methane and oxygen are called _______________.
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A change in the shape of an object is an example of _________________.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What type of change occurs when a new substance is formed that has different properties from the original substances?
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