The density of an object is calculated by

dividing its mass by its volume.

A theory is best described as a

generalization that explains known facts or phenomena.

The radius of an atom extends to the outer edge of the

region occupied by the electrons.

The average atomic mass of an element

may not equal the mass of any of its isotopes.

A chemical can be defined as

any substance that has a definite composition.

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Chemistry Final 2017 Part 1

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Chemistry Final Vocabulary Review

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Questions 20

Answers

1
Isotopes are atoms of the same element that have different
numbers of electrons.
principal chemical properties.
masses.
numbers of protons.
2
Atoms of the same element can differ in
mass number.
atomic number.
chemical properties.
number of protons and electrons.
3
A measurement that closely agrees with an accepted value is best described as
reproducible.
precise.
significant.
accurate.
4
A nonmetal is usually
a good conductor.
used to make jewelry.
brittle.
malleable.
5
The density of an object is calculated by
dividing its mass by its volume.
dividing its volume by its mass.
adding its mass to its volume.
multiplying its mass times its volume.
6
The atomic mass of an element listed in the periodic table is the
mass number of the least abundant isotope.
relative atomic mass of most abundant radioactive isotope.
relative atomic mass of the most abundant isotope.
average atomic mass.
7
The average atomic mass of an element is the average of the atomic masses of its
artificial isotopes.
naturally occurring isotopes.
two most abundant isotopes.
radioactive isotopes.
8
Inorganic chemistry is the study of
mathematical modeling.
the chemistry of living things.
non-carbon related compounds.
the identification of the composition of materials.
9
A plausible explanation of a body of observed natural phenomena is a scientific
experiment.
law.
control.
theory.
10
A theory is best described as a
series of experimental observations.
generalization that explains known facts or phenomena.
testable statement.
scientifically proven fact.
11
The radius of an atom extends to the outer edge of the
region occupied by the neutrons.
region occupied by the electrons.
nucleus.
positive charges.
12
Two variables are directly proportional if their ____ has a constant value.
quotient
difference
sum
product
13
A statement that can be tested experimentally is a
model.
variable.
hypothesis.
generalization.
14
The average atomic mass of an element
cannot be calculated.
always adds up to 100.
may not equal the mass of any of its isotopes.
is the mass of the most abundant isotope.
15
A measure of the quantity of matter is
weight.
mass.
density.
volume.
16
Dalton incorporated the law of conservation of mass into his atomic theory by asserting that
atoms are indivisible.
atoms of different elements have different properties.
matter is composed of atoms.
atoms can be destroyed in chemical reactions.
17
The number of atoms in a mole of any pure substance is called
its atomic number.
its mass number.
Avogadro's constant.
its gram-atomic number.
18
All atoms of the same element have the same
mass number.
atomic mass.
atomic number.
number of neutrons.
19
Which of these is the abbreviation for the SI base unit of time?
hr
sec
s
h
20
A chemical can be defined as
an unnatural additive placed in food.
any substance that has a definite composition.
any substance that is not alive.
a toxic substance.

Chemistry Final 2017 Part 1 Flashcards | StudBud