1. Types of Matter Element “LIST OF ELEMENT YOU SHOULD KNOW”
Pure substance
One kind of atom
Smallest particle of matter that maintains chemical identity
Represented by one or two letter symbol
Example: Helium (He)
“LIST OF ELEMENT YOU SHOULD KNOW”
Episode 202

2. Compound Two or more elements chemically combined (bonded)
Compound
Two or more elements chemically combined (bonded)
Represented by chemical formula
Example: water (H2O)
H2O decomposes into hydrogen gas and oxygen gas
Combine in same proportion
H2O always contains 2 atoms of hydrogen and 1 atom of oxygen
Episode 202

3. Pure substances (elements and compounds) are homogeneous
Mixture
Two or more substances physically combined
Separated by physical means
Do not combine in same proportions
Heterogeneous mixture
Not uniform in composition
Homogeneous mixture (solution)
Uniform compostion
Alloy
Solution of two or more metals
Pure substances (elements and compounds) are homogeneous
Episode 202

4. E C C C S HE HE E C E S HE Carbon monoxide Steel Calcium Lead Milk
Hydrogen peroxide
Carbon dioxide
Pizza
Salad dressing
Rust
Apple juice E C
Carbon
Carbon monoxide
Steel
Calcium
Lead
Milk C C S HE HE E C E S HE
Episode 202