Rate of reactions (KS3)
Authored by Ker GAN
Chemistry
6th - 8th Grade
NGSS covered
Used 233+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What happens in ALL chemical changes?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is wood burning a physical or chemical change?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is sugar dissolving in water physical or chemical change?
Physical
Chemical
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of these show chemical change? (multiple answers)
Sugar cubes are melted from a solid to liquid.
Metal A is added to an acid. Bubbles can be seen.
Iron powder is mixed with sand.
Solution A and solution B are mixed in a conical flask. The flask starts to feel warm.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of these is not a sign that a chemical reaction has taken place?
Changing size
Changing color
A gas being formed
Formation of a precipitate
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which factors affect the rate of a reaction?
temperature
concentration
surface area
light intensity
catalyst
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A temperature increase causes the particles to ......
to slow down
move faster
collide higher
in the right order
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