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WorksheetsAtomic structure and isotopes
Total questions: 10
Worksheet time: 5mins
What is the charge on a proton?
+1
0
-1
1
What is the mass of a neutron?
0
1
2
almost 0
What is the charge on a neutron?
+1
0
-1
1
What is the mass of an electron?
0
1
2
almost 0
What is the charge on an electron?
+1
0
-1
1
What is the overall charge on an atom?
positive
no charge
negative
What does the atomic mass number tell us about an atom?
The number of protons
The number of neutrons
The number of protons and neutrons
The number of protons and electrons
An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct?
An atom of sodium has 11 protons, 11 electrons, and 11 neutrons.
An atom of sodium has 11 protons, 12 electrons, and 11 neutrons.
An atom of sodium has 11 protons, 11 electrons, and 12 neutrons.
An atom of sodium has 11 protons, 12 electrons, and 12 neutrons.
An atom of phosphorus has an atomic number of 15 and a mass number of 31. How many neutrons does it contain?
15
16
31
Complete the following sentence: 'Different isotopes of the same element have...'
...the same number of protons, but differing numbers of neutrons and electrons
...the same number of neutrons, but differing numbers of protons and electrons
...the same number of protons and neutrons, but differing numbers of electrons
...the same number of protons and electrons, but differing numbers of neutrons
