Atoms Ions Isotopes

Front

What is an atom?

Back

An atom is the smallest unit of an element, consisting of protons, neutrons, and electrons.

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 an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

Front

How many protons does an atom of titanium have?

Back

22 protons.

Front

What does the atomic number represent?

Back

The atomic number represents the number of protons in the nucleus of an atom.

Front

If an atom has a charge of -2, how does this affect the number of electrons?

Back

It means the atom has 2 more electrons than protons.

Front

What happens when neutrons are added or removed from an atom?

Back

It changes the atom into an isotope of the same element.

Front

What is the charge of a neutral atom?

Back

A neutral atom has no overall charge, meaning the number of protons equals the number of electrons.

Front

What is the relationship between protons and electrons in a positively charged ion?

Back

In a positively charged ion, there are fewer electrons than protons.

Front

What is the significance of the mass number?

Back

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