What is Matter made of?
Atoms – the basic particle of which all matter,
EVERYTHING, is made
* A sheet of paper is approximately 10,000 atoms thick
Elements
• Simplest of substances made of only one kind of atom
• Cannot be broken down in anything else
• Represented by one or two letter symbols
• Identified by Physical and Chemical Properties
Molecule – a group of Two or more Atoms held
together by a chemical bond.
*Chemical bond – the force of attraction between two atoms
Two of the same atoms
Different atoms, Oxygen & Hydrogen
Compound – a substance made of Two or more Elements
held together by a chemical bond
atom
A compound made up of
2 different elements
atom
A compound made up of
7 different elements
A compound can be broken down into elements
An element
An element
A compound made up of 3
different elements
An element
Difference between Molecules & Compounds
Molecules are two or more atoms. These atoms can be of the same
element or not.
Example: Oxygen Gas (O2) or Water (H2O)
Compounds are two or more different Elements.
Example: Water (H2O) Sodium Chloride (NaCl)
Chemical Formula: Element Symbols and
Ratio (# of atoms)
C6H12O6
or
2(H20)
Draw a line between the molecule and its name.
Hydrogen chloride HCl
Chlorine Cl2
Carbon dioxide CO2
Methane CH4
Type of Matter:
Made up of:
Water
Hydrogen and Oxygen
Coal
Carbon
Carbon dioxide
Carbon and Oxygen
Oxygen Gas
Oxygen + Oxygen
Chalk
Calcium, Carbon & Oxygen
Wax
Carbon & Hydrogen
Table salt
Sodium & Chlorine
Helium
Helium
Element or Compound
(one is neither)