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WorksheetsChemistry Semester 1 Review
Total questions: 20
Worksheet time: 3600secs
What is the name of this element?
Oxygen
Tin
Sulfur
Magnesium
What is the atomic number of this element?
8
15.999
What is the chemical symbol of this element?
O
Ox
Oy
Og
What is a row of elements on the periodic table called?
period
group
What is a column of elements on the periodic table called?
period
group
The elements in a group have the same or similar properties.
True
False
Which group has 2 valence electrons?
Transition Metals
Alkaline Earth Metals
Which group has the magnetic elements iron, cobalt, and nickel?
Transition Metals
Alkaline Earth Metals
What particles determine the mass number?
Protons and electrons
Electrons and neutrons
Protons and neutrons
Protons, neutrons, and electrons
The atomic number is equal to _.
the number of protons
the number of neutrons only
the total number of protons and neutrons
the number of protons, neutrons, and electrons
How many neutrons does this bromine atom have?
35
45
80
115
What is the mass number of this Neon atom?
10
11
21
20
What changes when an atom becomes an ion?
The number of electrons
The number of protons
The number of neutrons
Both the number of neutrons and electrons
What is the charge on a lithium atom that loses 1 electron?
+1
0
-1
-2
How many electrons does this magnesium ion have?
24
12
10
14
1s22s22p63s23p64s23d10
