Chem 3.1

Front 1

Law of Conservation of mass

Back 1

mass is never created or drestroyed.

i.e. wood burning becomes ash gas same mass though

Front 2

law of definite proportions

Back 2

same elements in same proportion

i.e. 1 carbon 1 oxygen = 1 carbon monoxide always same proportion on each side

Front 3

law of multiple proportions

Back 3

two or more compounds ratio wilel always have whole numbers

i.e. 1 carbon 2 oxygen will be 2 to 1 will never be 2 to 3.5 always be whole

Front 4

Daltons Atomic theory

Back 4

1. all matter is composed of atoms

2. atoms of an element are indentical in size, mass, and other properties

3. cannot be subdivided, created, or destroyed

4. atoms of different elements combine in simple whole number ratios to form chem. compounds

5. in chem. reactions atoms are combined seperated or rearranged