Our Universe
Matter –
Space-time
Energy
Has mass, volume
Made up of tiny particles called atoms
-2 or more substances mixed together
- substances keep their own properties
- can be separated by physical methods
Pure Substances
Made up of only 1 type of particle
Elements:
-Simplest pure
- Made of only one
kind of an atom
- Found in the
Periodic Table
Iron (Fe)
Chlorine (Cl)
Hydrogen (H)
Carbon (C)
Gold (Au)
Sodium (Na)
Mixtures:
Compounds:
Homogeneous:
Heterogeneous:
- 2 or more elements
that are chemically
bonded
- new substance- has
different properties
from the original
- Smoothly and evenly
mixed
- uniform throughout
- also called “solution”
- Not smoothly and
evenly mixed
-Salt or sugar
dissolved in water
-Vinegar and oil;
salad dressing
Water (H2O)
NaCl
Glucose (C6H12O6)
-Air
-Milk
-Beach sand
-Trail Mix