Ions and Isotopes Worksheet
Explore the fundamental concepts of ions and isotopes, including their structure, charge, and mass number, for Grade 7 Science.
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Ions and Isotopes
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Read each question carefully and answer to the best of your ability. This worksheet covers the basics of ions and isotopes.
1. What is an ion?
An atom with a different number of neutrons
An atom with a net electrical charge
An atom that has lost its nucleus
A molecule made of two different elements
2. How is an isotope different from a standard atom of the same element?
It has a different number of protons.
It has a different number of electrons.
It has a different number of neutrons.
It has a different atomic number.
1. A positive ion is formed when an atom gains electrons.
True
False
2. All isotopes of an element have the same atomic mass.
True
False
1. The particles in the nucleus of an atom that have no charge are called .
2. An atom that loses electrons becomes a ion, which has a charge.
3. Isotopes of the same element have the same number of but different numbers of .
1. Explain why atoms become ions.
2. Describe how the mass number of an isotope is determined.