Basic Chem (Omega) 7th Per 12/11

Front

What is the charge of an electron?

Back

Negative

Front

What is the nucleus of an atom?

Back

The central part of an atom that contains protons and neutrons.

Front

How many neutrons are in potassium (K) with an atomic mass of 39?

Back

20 neutrons (39 - 19 protons = 20 neutrons).

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What happens to an atom when it loses electrons?

Back

It becomes positively charged.

Front

What are ions?

Back

Atoms that have gained or lost electrons, resulting in a charge.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are alkali metals?

Back

Elements in Group 1 of the periodic table, known for being highly reactive.

Front

What is the difference between an atom and a molecule?

Back

An atom is a single unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is a neutron?

Back

A particle in the nucleus of an atom that has no charge.