Can be broken down to 2 types of substances: a singular element (element) or multiples elements (compound)
Pure substances are defined as substances that are made
of only one type of particle (atom or molecule).
Elements
Anotações:
Can be broken down to a smaller type which has to do with the composition of the particles.
An element is a substance that cannot be broken
down into simpler substances by
physical or chemical means.
Compounds
Anotações:
Can be broken down to a smaller type which has to do with the composition of the particles.
A compound is a substance formed when two or more
elements are chemically bonded together. This compound has different
properties than the two elements it was before.
Molecules
Anotações:
Can be broken down to the simplest form which has to do with the actual amount of particles that is connected.
Atoms
An atom is the smallest component of an element, characterized by a sharing of the
chemical properties of the element and a nucleus with neutrons, protons and
electrons.
A molecule is the smallest particle in a chemical element or compound that has the
chemical properties of that element or compound. Molecules are made up of atoms
that are held together by chemical bonds. These bonds form as a result of the sharing
or exchange of electrons among atoms.
Mixture
Anotações:
Cannot be broken down as it does not form a new substance when mixed.
A mixture refers to the physical combination
(not chemical) of two or more substances on
which the identities are retained.
Matter is anything that has
mass and takes up space