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Law Of Conservation Of Matter Review
Test Description: Law of Conservation of Matter
Instructions: Answer all questions to get your test result.
1) A burning candle is covered by a jar so that no matter can get in or out. The whole arrangement has a mass of 500 g. What will be the approximate mass of the arrangement when the candle is completely burnt, after four minutes?
A
50 g
B
250 g
C
0 g
D
500 g
2) Using the Law of Conservation of Matter, determine the number of grams of iron sulfide (FeS) that will be produced in this reaction. 112 g Fe + 64 g S → _____ g FeS
A
64 g
B
112 g
C
176 g
D
48 g
3) If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
A
2 g
B
4 g
C
0 g
D
8 g
4) Colton has an ice cube that has a mass of 4 grams. He places it in a sealed container and then puts it in the microwave on high. The ice cube melts after a few seconds. He removes the sealed container and checks the mass again. What will he find?
A
The mass of the melted ice cube was more than 4 grams.
B
The mass of the melted ice cube remained the same at 4 grams.
C
The mass of the melted ice cube was less than 4 grams.
D
The mass of the melted ice cube could not be determined.
5) Na + Cl → NaCl .... Sodium and Chlorine combine to form table salt. Given the chemical reaction, how many grams of Na + Cl would be required to produce 4 grams of table salt?
A
4 g
B
3 g
C
2 g
D
8 g
6) The law of conservation of matter states that...
A
matter cannot be created but it can be destroyed
B
matter cannot be created or destroyed
C
matter can be created and destroyed
D
matter can be created but not destroyed
7) At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
A
the product is doubled
B
the product is half the mass of the reactants
C
the mass is the same
D
the mass changes depending on the reaction
8) What is the part of the chemical equation on the left side of the arrow called? Fe + S -- FeS
A
products
B
reactants
9) The substances at the end of a chemical reaction are called the ____
A
reactants
B
chemical
C
product
D
yield
10) You add 5 grams of iron to HOW MANY grams of sulfuric acid to yield 12 grams of iron sulfide
A
12 g
B
7 g
C
5 g
D
17 g
*select an answer for all questions
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