AP Chemistry Midterm Multiple Choice Questions with Correct Answers
Question 1:
If matter is uniform throughout and cannot be separated into other substances by physical
process but can be decomposed into other substances by chemical processes, it is called a?
Answer:
compound
Question 2:
A separation process that depends on differing abilities of substances to form gases is called
Answer:
? distillation
Question 3:
Which one of the following is a pure substance?
Answer:
elemental copper
Question 4:
? homogeneous mixture
Answer:
A small amount of salt dissolved in water is an example of a
Question 5:
Which of the following is often easily separated into its components by simple techniques such
as filtering or decanting?
Answer:
heterogeneous mixture
Question 6:
The law of constant composition says
Answer:
that the composition of a compound is always the same
,Question 7:
Which of the following are chemical processes?
Answer:
1. rusting of a nail
Question 8:
3. decomposition of water into hydrogen and oxygen gases Which of the following is an
intensive property?
Answer:
temperature
Question 9:
how close a measured number is to the true value
Answer:
Accuracy refers to
Question 10:
kilogram is how many milligrams
Answer:
1,000,000
Question 11:
An object will sink in a liquid if the density of the object is greater than that of the liquid. The
mass of a sphere is 9.83g. If the volume of the sphere is less than
Answer:
cm, then the sphere will sink in a liquid mercury (density=13.6g). 0.723
Question 12:
The density of silver is 10.5g/cm. A piece of silver that occupies a volume of 23.6cm would have
a mass of
Answer:
? 248
, Question 13:
significant figures? 3
The correct result of the following is 12 1.2
0.22
Answer:
The number 0.00430 has
Question 14:
+0.012
Answer:
13
The correct answer to the following is (sigfigs)
Question 15:
6.3 x 3.25=
Answer:
20.(0.002843)(12.80184)
Question 16:
0.00032
Answer:
two sigs x 10^2
Question 17:
There are
Answer:
sigfigs in the answer to the following computation (29.2-20.0)(1.79 x 10^5)
Question 18:
1.39
Answer:
2
Question 19:
? 98.079
Answer:
The correct result of the molecular mass calculation for H2SO4 is
Question 1:
If matter is uniform throughout and cannot be separated into other substances by physical
process but can be decomposed into other substances by chemical processes, it is called a?
Answer:
compound
Question 2:
A separation process that depends on differing abilities of substances to form gases is called
Answer:
? distillation
Question 3:
Which one of the following is a pure substance?
Answer:
elemental copper
Question 4:
? homogeneous mixture
Answer:
A small amount of salt dissolved in water is an example of a
Question 5:
Which of the following is often easily separated into its components by simple techniques such
as filtering or decanting?
Answer:
heterogeneous mixture
Question 6:
The law of constant composition says
Answer:
that the composition of a compound is always the same
,Question 7:
Which of the following are chemical processes?
Answer:
1. rusting of a nail
Question 8:
3. decomposition of water into hydrogen and oxygen gases Which of the following is an
intensive property?
Answer:
temperature
Question 9:
how close a measured number is to the true value
Answer:
Accuracy refers to
Question 10:
kilogram is how many milligrams
Answer:
1,000,000
Question 11:
An object will sink in a liquid if the density of the object is greater than that of the liquid. The
mass of a sphere is 9.83g. If the volume of the sphere is less than
Answer:
cm, then the sphere will sink in a liquid mercury (density=13.6g). 0.723
Question 12:
The density of silver is 10.5g/cm. A piece of silver that occupies a volume of 23.6cm would have
a mass of
Answer:
? 248
, Question 13:
significant figures? 3
The correct result of the following is 12 1.2
0.22
Answer:
The number 0.00430 has
Question 14:
+0.012
Answer:
13
The correct answer to the following is (sigfigs)
Question 15:
6.3 x 3.25=
Answer:
20.(0.002843)(12.80184)
Question 16:
0.00032
Answer:
two sigs x 10^2
Question 17:
There are
Answer:
sigfigs in the answer to the following computation (29.2-20.0)(1.79 x 10^5)
Question 18:
1.39
Answer:
2
Question 19:
? 98.079
Answer:
The correct result of the molecular mass calculation for H2SO4 is
