2.1 Atoms, Elements And Compounds

Any substance that has mass and occupies volume

Pure substances-element/compound Mixture-homogenous/hetrogenous

All the particles within the substance are the same

Substance made from only one type of atom(all containing the same protons)

Substance made from different types of elements chemically bound together

Physical combo of 2+ substances that can be separated by physical means

A mixture of substances in the same phase-cannot distinguish between the layers.

A mixture of substances in different phases-easily distinguishable between layers.

Atom or group of atoms that has gained or lost electrons

The nucleons

Atoms of the same element with the same number of protons but a different number of neutrons

Elements are the simplest substance that cannot be broken down further using chemical methods, compounds are 2 or more elements chemically bonded and mixtures are 2+ substances chemically combined together