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Chemistry - Structure & Components of the Atom
By Faith Montgomery
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Last updated over 4 years ago
15 questions
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PSc.2.1.1
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Chm.1.1.1
PSc.2.1.4
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Question 1
1.
_______________ is the only item that exists on Earth at standard pressure as a solid, liquid, and gas.
Question 2
2.
A(n) _______________, such as oxygen or carbon, is a pure substance.
Question 3
3.
______________ has an atomic number of 1.
Question 4
4.
Nitrogen has an atomic mass of 14 and an atomic number of 7, so the number of neutrons must be _______________.
Question 5
5.
States of matter depend in part on the temperature of an item.
True
False
Question 6
6.
Electrons have a _______________ charge.
positive
negative
neutral
Question 7
7.
Anything that has mass and takes up space is an example of _______________.
volume
weight
matter
energy
Question 8
8.
The currently accepted model of the atom includes an electron cloud.
True
False
Question 9
9.
A neutral atom has the same number of ____________ and ____________.
protons ; neutrons
protons ; electrons
neutrons ; electrons
positrons ; neutrons
Question 10
10.
The number of neutrons is equal to the atomic number.
True
False
Question 11
11.
Electrons are a lot lower in mass than protons.
True
False
Question 12
12.
The following describes the particles in an unknown material.
The particles are packed more closely together than the particles of a liquid and therefore don't have as much movement.
Which state of matter does the description above describe?
solid
liquid
gas
Question 13
13.
Which of the following are
not
phases of matter? Select all that apply.
solid
mixture
liquid
compound
gas
Question 14
14.
Which of the following are molecules or compounds? Select all that apply.
MgCl
2
Ag
C
3
H
8
NaCl
Al
Question 15
15.
Which of the following characteristics did John Dalton include in his description of the atom? Select all that apply.
Atoms exist only on Earth.
In any element, all the atoms are the same.
Elements in a compound are always in a constant ratio.
Atoms are smaller than quarks.
All matter is made up of atoms.