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WorksheetsUnit 4: Atoms, electrons, & ions review
Total questions: 25
Worksheet time: 22mins
Match the following:
H
H 1-
H 1+
Match the following:
He
He 2-
He 2+
Match the following:
Li
Li 1-
Li 1+
Match the following:
Be
Be 1-
Be 2+
An atom with an unequal number of protons and electrons is:
an atom.
an isotope.
an ion.
radioactive.
How many electrons should a neutral atom of carbon have?
12
6
2
4
If the number of protons changes, then the atom becomes:
an ion.
an isotope.
a different element.
If the number of neutrons changes, then the atom becomes:
an ion.
an isotope.
a different element.
If the number of electrons changes, then the atom becomes:
an ion.
an isotope.
a different element.
Match the following
1 electron in the "cloud"
2 electrons in the "cloud"
3 electrons in the "cloud"
4 electrons in the "cloud"
Match the following
Neon
Boron
Helium
Match the following
6 protons
8 neutrons
6 electrons
6 protons
6 neutrons
10 electrons
6 protons
6 neutrons
2 electrons
Match the following
6 protons
8 neutrons
6 electrons
6 protons
6 neutrons
10 electrons
6 protons
6 neutrons
2 electrons
An atom that has gained electrons becomes a:
neutral atom
negative ion
positive ion
An atom that has lost electrons becomes a:
neutral atom
negative ion
positive ion
An atom that has equal protons and electrons becomes a:
neutral atom
negative ion
positive ion
How many electrons would an ion of oxygen with a 2- charge have?
8
16
10
6
How many electrons would an ion of magnesium with a 2+ charge have?
12
14
10
24
How many electrons would an ion of nitrogen with a 3- charge have?
7
10
4
14
How many electrons would an ion of potassium with a 1+ charge have?
19
20
18
39
Which of the following ions will have the same number of electrons as a neutral atom of neon?
F 1-
Mg 1+
K 1+
S 2-
Which of the following ions will have the same number of electrons as a neutral atom of helium?
F 1-
H 1+
Li 1+
O 2-
Match the following
Neutral atom
Ion that has lost 2 electrons
Ion that has gained 2 electrons
Hot things are
warm
cool
hot
ice cold
What's cooler than being cool?
warm
cool
hot
ice cold
