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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
eating an antacid to calm your upset stomach
B
rubbing your hands together to warm them
C
tearing up your quiz because you made a bad grade
D
pouring water on a cut to wash off the germs
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
6 g
B
not enough information to answer this question
C
24 g
D
12 g
3) The chemical reaction (A + B yields AB) can be described as
A
decomposition
B
synthesis
C
single replacement
D
double replacement
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
Carbon, carbon dioxide, water
B
carbon, hydrogen and oxygen
C
Carbon and hydrogen
D
C, CO2, H2O
5) AB + CD yields AC + BD is an example of which type of reaction?
A
double replacement
B
decomposition
C
single replacement
D
synthesis
6) Review: When atoms share valence electrons it is known as a
A
covalent bond
B
metallic bond
C
negative bond
D
ionic bond
7) Review: What is the correct name for the covalent compound CF3?
A
monocarbon trifluoride
B
calcium fluoride
C
monocarbon tetrafluoride
D
carbon trifluoride
8) Review: When naming ionic compounds you use prefixes.
A
False, prefixes are used in naming ionic and covalent compounds.
B
True, prefixes are used in naming ionic compounds ONLY.
C
True, prefixes are used in naming ionic and covalent compounds.
D
False, prefixes are only used in naming covalent compounds.
9) The law of conservation of mass states that
A
matter can't be created or destroyed.
B
matter can't be destroyed.
C
energy can't be created or 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
5 g
B
3 g
C
8 g
D
11 g
*select an answer for all questions
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