
11) Chemical Changes
Authored by Ng Matthew
Science
7th - 8th Grade
Used 19+ times

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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is a sign that a chemical reaction has occurred?
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Is melting butter for popcorn a chemical or physical change?
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is NOT an example of a physical change?
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of these is a result of a chemical change?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
Neutralisation
Thermal decomposition
rusting
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
True or false, combustion must result in the production of carbon dioxide
True
False
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process does not produce carbon dioxide?
combustion of hydrocarbons
photosynthesis
respiration
acid + carbonate reaction
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