Atoms: Fast and Curious

Front

What is the atomic number of an atom?

Back

The atomic number is the number of protons in an atom.

Front

What is a neutral atom?

Back

A neutral atom is an atom that has the same number of positive protons and negative electrons.

Front

What are the masses of subatomic particles?

Back

Proton and neutron = 1 amu; electron = 0.

Front

What is a cation?

Back

A cation is a positively charged atom that has more positive protons than negative electrons.

Front

Where are electrons located in an atom?

Back

Electrons are located outside the nucleus of the atom.

Front

What is an anion?

Back

An anion is a negatively charged atom that has more negative electrons than positive protons.

Front

What is the mass of a proton?

Back

The mass of a proton is approximately 1 amu.

Front

What is the mass of a neutron?

Back

The mass of a neutron is approximately 1 amu.

Front

What is the mass of an electron?

Back

The mass of an electron is approximately 0 amu.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.