Retake- Atoms Ions and Isotopes

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the charge of an ion that has lost electrons?

Back

The charge of an ion that has lost electrons is positive.

Front

What is the charge of an ion that has gained electrons?

Back

The charge of an ion that has gained electrons is negative.

Front

How many protons does a Carbon-12 atom have?

Back

A Carbon-12 atom has 6 protons.

Front

What distinguishes isotopes of an element?

Back

Isotopes of an element differ in the number of neutrons they contain.

Front

What is the mass number of an atom?

Back

The mass number of an atom is the total number of protons and neutrons in its nucleus.

Front

If an atom has 12 protons and 10 electrons, what is its charge?

Back

The charge is +2, because it has lost 2 electrons.

Front

Can an atom of Helium have 3 neutrons?

Back

Yes, because it can be an isotope, specifically Helium-5.

Front

What is the difference between Carbon-12 and Carbon-14?

Back

Carbon-12 has 6 neutrons, while Carbon-14 has 8 neutrons, resulting in different mass numbers.

Front

What happens to the charge of an aluminum atom when it loses 3 electrons?

Back

It becomes a +3 ion.