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WorksheetsUnit 1 Boss Battle
Total questions: 10
Worksheet time: 12mins
Name
Class
Date
1.
subatomic particles found on the outermost shell & responsible for the atom's reactivity
a)
neutrons
b)
valence electrons
c)
isotopes
d)
ions
2.
A charged atom
a)
Ion
b)
Isotope
c)
Electron Cloud
d)
Quark
3.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
4.
The only element with no neutrons in its nucleus.
a)
Oxygen
b)
Helium
c)
Hydrogen
d)
Lithium
5.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
6.
What element in Period 4 has 5 valence electrons?
a)
Zr
b)
As
c)
V
d)
Sb
7.
Atomic Radius is...
a)
the relative size of the atom's nucleus
b)
the relative size of the atom's electron cloud
c)
the energy required to shield the outer electrons from the nucleus
d)
a measure of the ability of an atom to attract electrons
8.
Why are ions formed?
a)
Because atoms with a charge (ions) are able to do more things in the universe than atoms without a charge
b)
Because atoms want a stable electron configuration
c)
Because atoms don't want to have the same number of protons and electrons.
d)
Scientists do not know why, they just do.
9.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
It doesn't change when it loses electrons.
10.
Which particles change only the charge of an atom?
a)
Protons
b)
Electrons
c)
Neutrons
d)
Protons and electrons
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