Section #: 3.1
What are elements?
Practice Test
1.
What is the smallest particle of an element?
a.
a neutron
b.
a proton
c.
an atom
d.
an isotope
Hint
2.
What is a substance that cannot be broken down into simpler substances with all the characteristics of the substance?
SC.A.2.4.2
a.
matter
b.
a gas
c.
an element
d.
a solid
Hint
3.
What particles make up the nucleus of an atom?
a.
neutrons and electrons
b.
electrons only
c.
protons and neutrons
d.
protons only
Hint
4.
According to the symbols shown in the figure, in which state of matter do these elements occur?
SC.A.1.4.3
a.
gas
b.
liquid
c.
plasma
d.
solid
Hint
5.
Electrons tend to occupy the __________ energy level.
SC.A.1.4.5
a.
highest available
b.
lowest available
c.
second
d.
intermediate
Hint
6.
The number of protons in an atom's nucleus is the __________.
SC.A.2.4.1
a.
isotopic number
b.
atomic number
c.
radioactivity number
d.
mass number
Hint
7.
What type of atomic particle has a negative charge?
a.
a proton
b.
a neutron
c.
an isotope
d.
an electron
Hint
8.
What determines the chemical behavior of an element?
SC.A.1.4.1
a.
the valence electrons
b.
its isotopes
c.
the number of energy levels
d.
the size of the nucleus
Hint
9.
What do the nuclei of some isotopes release during radioactive decay?
SC.A.2.4.2
a.
lead
b.
their nuclei
c.
radiation
d.
valence electrons
Hint
