Quantitative Chemistry basics
Authored by R Chard
Science, Chemistry
9th - 11th Grade
Used 46+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these is NOT true?
· In a chemical reaction, no atoms are lost or made, they are only re-arranged
· The mass of reactants = mass of products
· Atoms can be created or destroyed
· Atoms cannot be created or destroyed
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the sum of the reactants Mr’s is 52, what is the sum of the products Mr’s?
26
52
104
It's impossible to tell
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When weighed, the sum of the mass of the reactants is 80g, the sum of the mass of the products is 78g. Why?
· An error has been made measuring
· One of the products is a gas
· One of the reactants is a gas
· One of the products is an oxide
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Why does the mass in some chemical reactions seem to increase?
· An error has been made measuring
· One of the products is a gas
· One of the reactants is a gas
· One of the products is an oxide
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is the correct representation of the formula of water?
· H2O
· H2O
· h2O
· O2H
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the relative atomic mass of Carbon?
6
12
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the relative atomic mass of Magnesium?
24
12
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