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Pre-AP Chemistry Unit 1 Review Questions
Test Description: Review for Ch.2, 3, and 4 Test
Instructions: Answer all questions to get your test result.
1) This describes a mixture with a uniform composition.
A
compound
B
heterogeneous
C
homogeneous
D
None of the above
2) What state of matter is characterized by having an indefinite shape, but a definite volume?
A
gas
B
solid
C
none of the above
D
liquid
3) A substance that can be separated into two or more substances only by a chemical change is called a(n) ________________.
A
heterogeneous mixture
B
none of the above
C
element
D
compound
4) Which of the following does NOT involve a change in chemical properties?
A
rusting
B
boiling
C
burning
D
fermenting
5) All of the following changes to a metal are physical changes EXCEPT
A
bending
B
rusting
C
polishing
D
melting
6) An example of an extensive property of matter is __________________.
A
hardness
B
pressure
C
temperature
D
mass
7) Which of the following items is NOT a compound?
A
salad dressing
B
sucrose
C
salt
D
baking soda
8) What is the result of multiplying 2.6 x 10^8 by 5.2 x 10^-5
A
13.52 x 10^13
B
1.352 x 10^12
C
13.52 x 10^3
D
1.352 x 10^4
9) What is the result of adding 3.4 x 10^4 and 7.1 x 10^6
A
1.05 x 10^6
B
3.471 x 10^8
C
7.134 x 10^6
D
none of the above
10) The closeness of a measurement to its true value is a measure of its
A
accuracy
B
precision
C
reproducibility
D
usefulness
11) Express the product of 3.8 x 10^-3 m and 7.5 x 10^4 using the correct number of significant figures.
A
2.85 x 10^2
B
none of the above
C
28.5 x 10^1
D
2.9 x 10^2
12) What is the quantity of 865 milligrams expressed in grams?
A
8.65 g
B
86,500 g
C
0.000865 g
D
0.865 g
13) If you are traveling at 48 meters per second, how fast are you traveling in miles per hour?
A
none of the above
B
107 miles per hour
C
8.3 x 10^-6 miles per hour
D
2.8 x 10^8 miles per hour
14) What is the temperature 340 K in degrees Fahrenheit?
A
none of the above
B
152.6 degrees Fahrenheit
C
19.4 degrees Fahrenheit
D
67 degrees Fahrenheit
15) The particles that are found in the nucleus of an atom are ______________.
A
protons and electrons
B
electrons only
C
neutrons and electrons
D
protons and neutrons
16) How many neutrons are in Rubidium-88
A
none of the above
B
48
C
51
D
88
17) Isotopes of the same element have different ______________.
A
numbers of protons
B
number of electrons
C
atomic numbers
D
number of neutrons
18) The sum of the protons and neutrons in an atom equals the ___________________.
A
atomic mass
B
nucleus number
C
mass number
D
atomic number
19) The smallest particle of an element that retains the properties of that element is a(n) ____________________.
A
electron
B
atom
C
neutron
D
proton
20) What is the mass number for a magnesium atom that has 14 neutrons in its nucleus
A
14
B
24
C
26
D
none of the above
*select an answer for all questions
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