Atoms, Isotopes and Ions

Front

What is the definition of an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

How do isotopes of the same element differ?

Back

Isotopes of the same element differ in their mass numbers due to the different number of neutrons.

Front

What is the mass number of an atom?

Back

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

Front

How many protons are in a carbon atom?

Back

A carbon atom has 6 protons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How many neutrons are in carbon-12?

Back

Carbon-12 has 6 neutrons.

Front

What is the difference between a neutral atom and an ion?

Back

A neutral atom has an equal number of protons and electrons, while an ion has a different number of electrons than protons, resulting in a charge.

Front

What happens to an atom when it loses electrons?

Back

When an atom loses electrons, it becomes a positively charged ion (cation).

Front

How many electrons are in a neutral atom of fluorine?

Back

A neutral atom of fluorine has 9 electrons.

Front

What is the charge of an ion that has 10 electrons and 8 protons?

Back

The ion has a charge of -2, as it has 2 more electrons than protons.