Basic Chemistry Concepts

Front

What is an element?

Back

A pure substance made entirely of one type of atom; found on the periodic table.

Front

What is a molecule?

Back

Bonded atoms; the smallest part of a compound.

Front

What is an isotope?

Back

Atoms of the same element that differ in the number of neutrons.

Front

Acid/Acidic

Back

has more H+ ions. pH below 7

Front

Atomic Number

Back

Equals the number of protons (which also equals the number of electrons)

Front

What is a nucleus?

Back

The central part of an atom, made up of one or more protons and usually one ore more neutrons. This region of an atom holds most of its mass.

Front

What are electrons?

Back

A NEGATIVE subatomic particle that orbits the nucleus of an atom. A speck compared to a proton or a neutron.

Front

What is a covalent bond?

Back

A bond formed by the sharing of electrons between atoms.

Front

Atom

Back

The basic unit of all matter

Front

What are protons?

Back

A positive subatomic particle found in the nucleus of an atom.