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WorksheetsAtoms & the Periodic Table
Total questions: 19
Worksheet time: 10mins
The positive particle in an atom.
proton
neutron
electron
electron cloud
How many protons does Nitrogen have?
7
8
14
14.01
Which of the labeled structures is a neutron?
a
b
c
The negative particle in an atom.
proton
neutron
electron
What is the mass number of this element?
7
8
14
14.01
Which of the labeled structures is an electron?
a
b
c
If an element has an atomic number of 11 and a mass number of 23, how many neutrons does it have?
11
12
23
34
The neutral particle in an atom.
proton
neutron
electron
Which of the following particles is NOT found in an atom's nucleus?
proton
neutron
electron
An element has 17 protons and 18 neutrons in the nucleus. What is the element's mass number?
17
18
1
35
Which of the labeled structures is a proton?
a
b
c
He created the model of the atom we use today.
Aristotle
Rutherford
Bohr
Dalton
What is the chemical symbol of this element?
79
Au
AU
gold
