Periodic Table and Atoms

Front

What is the charge of an atom with equal numbers of protons and electrons?

Back

neutral

Front

What particles are found in the nucleus of an atom?

Back

protons and neutrons

Front

What is the chemical symbol for the element with atomic number 1?

Back

H (Hydrogen)

Front

How many protons are in a calcium atom?

Back

20

Front

Which subatomic particle has a negative charge?

Back

electron

Front

What is the mass of a proton compared to an electron?

Back

Protons have significantly more mass than electrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of the atom and stabilize the nucleus.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a net charge due to the loss or gain of electrons.

Front

What determines the identity of an element?

Back

The number of protons in its nucleus.