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Chemical Reactions Review 2
Test Description: Chemistry
Instructions: Answer all questions to get your test result.
1) Which is an example of a chemical reaction?
A
pouring water on a cut to wash off the germs
B
tearing up your quiz because you made a bad grade
C
rubbing your hands together to warm them
D
eating an antacid to calm your upset stomach
2) Hydrogen and oxygen combine to form water. If you have 12 grams of hydrogen gas + oxygen gas in your reactant, how much water do you have in your product?
A
24 g
B
not enough information to answer this question
C
12 g
D
6 g
3) The chemical reaction (A + B yields AB) can be described as
A
double replacement
B
single replacement
C
synthesis
D
decomposition
4) If the products formed from burning a candle are mostly carbon (C), carbon dioxide (CO2) and Water (H2O), what elements are in the reactant?
A
C, CO2, H2O
B
carbon, hydrogen and oxygen
C
Carbon, carbon dioxide, water
D
Carbon and hydrogen
5) AB + CD yields AC + BD is an example of which type of reaction?
A
double replacement
B
synthesis
C
decomposition
D
single replacement
6) Review: When atoms share valence electrons it is known as a
A
metallic bond
B
ionic bond
C
negative bond
D
covalent bond
7) Review: What is the correct name for the covalent compound CF3?
A
monocarbon trifluoride
B
carbon trifluoride
C
calcium fluoride
D
monocarbon tetrafluoride
8) Review: When naming ionic compounds you use prefixes.
A
False, prefixes are only used in naming covalent compounds.
B
False, prefixes are used in naming ionic and covalent compounds.
C
True, prefixes are used in naming ionic and covalent compounds.
D
True, prefixes are used in naming ionic compounds ONLY.
9) The law of conservation of mass states that
A
matter can't be created or destroyed.
B
energy can't be created or destroyed.
C
matter can't be destroyed.
D
matter can't be created.
10) When 3 g of chlorine is added to 8 grams of sodium, how much sodium chloride is produced?
A
11 g
B
8 g
C
3 g
D
5 g
*select an answer for all questions
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