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WorksheetsEOC Review: PS1.10 - Conservation of Mass
Total questions: 10
Worksheet time: 2hrs 0mins
Name
Class
Date
1.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
2.
Balance this equation:
2Li + Cl2 -> LiCl
2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
3.
Balance this equation-
__P4 + __O2 --> __P2O3
__P4 + __O2 --> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
4.
Which equation best represents the law of conservation of mass?
a)
A
b)
B
c)
C
d)
D
5.
12g of Carbon react with 16g of Oxygen, how much carbon monoxide (CO) is formed?
a)
28 g
b)
4g
c)
30g
d)
12g
6.
In the reaction shown by the equation, 252 grams of FeCl2 and 70 grams of Cl2 are consumed.
2FeCl2+ Cl2--> 2FeCl3
How many grams of FeCl3 are produced?
2FeCl2+ Cl2--> 2FeCl3
How many grams of FeCl3 are produced?
a)
161 grams
b)
182 grams
c)
322 grams
d)
392 grams
7.
Which of the following is a balanced equation?
a)
Na + Cl2 --> NaCl
b)
H2 + O2 --> H2O
c)
Ca + Br --> CaBr2
d)
Na + F --> NaF
8.
Is this equation balanced or unbalanced?
CH4 + 2O2--> CO2+ 2H2O
CH4 + 2O2--> CO2+ 2H2O
a)
balanced
b)
unbalanced
9.
In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B have?
a)
4g
b)
5g
c)
9g
d)
14g
10.
If a reaction starts with 20g of reactants it should produce
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
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