C3 Know It
Authored by Mr Roux
Chemistry
8th - 12th Grade
Used 5+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does 'conservation' mean?
A glass room some houses have
Keeping things the same
Allowing things to change
Going from a gas to a liquid
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Law of Conservation of Mass in a chemical reaction?
Matter cannot be created or destroyed, so mass of reactants must equal mass of products
Matter cannot be created but it can be destroyed, so mass in a reaction can change
Matter can be created but not destroyed, so mass in a reaction can change
Matter cannot be created or destroyed, but mass in a reaction can change
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the reason for a change in mass in a reaction?
Matter has been destroyed
New matter has been created
A gas has been used or made
A solid has melted away
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many elements are in NaCl?
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are in one molecule of NaCl?
1
2
3
4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are in one molecule of H2O?
1
2
3
4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are in one molecule of H2SO4?
3
5
6
7
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