1. A Mad Scientist’s Chemistry Presentation
Laws of Definite & Multiple proportion

2. Molecules: A quick review
Molecules are the smallest electrically neutral unit.
Monatomic molecules are the Noble Gases.
HONClBrIF are the diatomic molecules.
Molecules are made of 2 or more atoms sharing electrons.
Non metal & non metal

3. Ionic Compounds
Ionic compounds are made up of groups of charged particles.
Cations and Anions
The smallest neutral unit of the resulting crystal is called a Formula Unit.
Metal and non metal

5. Law of Definite Proportion

6. Law of Multiple Proportions
Whenever two or more elements form more than one compound, different masses form with the same mass of another element in simple whole number ratios

7. You have 2 H for each 1 O in water
What does that mean?
The Mad Scientist
You have 2 H for each 1 O in water
But: You have 2 H for every 2 O in hydrogen peroxide.

8. Does that apply for Both?
The Laws of Multiple and Definite Proportions apply to both Ionic and Covalent Compounds.