Pre-AP Chemistry Unit 1 Review Questions: Question Preview (ID: 20794)

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This describes a mixture with a uniform composition.
a) homogeneous
b) heterogeneous
c) compound
d) None of the above

What state of matter is characterized by having an indefinite shape, but a definite volume?
a) solid
b) liquid
c) gas
d) none of the above

A substance that can be separated into two or more substances only by a chemical change is called a(n) ________________.
a) compound
b) element
c) heterogeneous mixture
d) none of the above

Which of the following does NOT involve a change in chemical properties?
a) burning
b) boiling
c) rusting
d) fermenting

All of the following changes to a metal are physical changes EXCEPT
a) rusting
b) polishing
c) bending
d) melting

An example of an extensive property of matter is __________________.
a) hardness
b) temperature
c) pressure
d) mass

Which of the following items is NOT a compound?
a) salad dressing
b) salt
c) baking soda
d) sucrose

What is the result of multiplying 2.6 x 10^8 by 5.2 x 10^-5
a) 13.52 x 10^3
b) 1.352 x 10^4
c) 13.52 x 10^13
d) 1.352 x 10^12

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

The closeness of a measurement to its true value is a measure of its
a) precision
b) usefulness
c) accuracy
d) reproducibility

Express the product of 3.8 x 10^-3 m and 7.5 x 10^4 using the correct number of significant figures.
a) 2.9 x 10^2
b) 2.85 x 10^2
c) 28.5 x 10^1
d) none of the above

What is the quantity of 865 milligrams expressed in grams?
a) 86,500 g
b) 0.865 g
c) 8.65 g
d) 0.000865 g

If you are traveling at 48 meters per second, how fast are you traveling in miles per hour?
a) 107 miles per hour
b) 8.3 x 10^-6 miles per hour
c) 2.8 x 10^8 miles per hour
d) none of the above

What is the temperature 340 K in degrees Fahrenheit?
a) 67 degrees Fahrenheit
b) 19.4 degrees Fahrenheit
c) 152.6 degrees Fahrenheit
d) none of the above

The particles that are found in the nucleus of an atom are ______________.
a) protons and electrons
b) protons and neutrons
c) electrons only
d) neutrons and electrons

How many neutrons are in Rubidium-88
a) 51
b) 48
c) 88
d) none of the above

Isotopes of the same element have different ______________.
a) atomic numbers
b) numbers of protons
c) number of electrons
d) number of neutrons

The sum of the protons and neutrons in an atom equals the ___________________.
a) nucleus number
b) mass number
c) atomic number
d) atomic mass

The smallest particle of an element that retains the properties of that element is a(n) ____________________.
a) atom
b) proton
c) electron
d) neutron

What is the mass number for a magnesium atom that has 14 neutrons in its nucleus
a) 24
b) 26
c) 14
d) none of the above

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