M4 Periodic
Table: Chemical Change
Slide 25 of 35
Formation of Water
Element: Hydrogen,
symbol: H, formula: H2
Properties:
•an odorless molecular gas room temperature
•transparent, clear, light passes through it
•chemically reactive - very reactive when a small spark is provided
Element: Oxygen,
symbol: O; formula: O2
Properties:
•an odorless molecular gas at room temperature
•transparent, clear, light passes through it
•chemically reactive -
very reactive when heated
Compound: Water, H2O
Properties:
•An odorless liquid at room temperature
•transparent, clear, light passes
through it
•not very chemically reactive, the compound is stable
