1. Chemistry: Bell work - 9/17/2018 Answer the following questions:
__________
__________
__________
__________

2. Bell work Answers: : Student - 3 : Student - 4 : Student - 1

3. 3.4. Mixtures, elements, & compounds 3.3. Separation of mixtures
Chapter: 3
Properties of Matter:
3.4. Mixtures, elements, & compounds
3.3. Separation of mixtures
By Dr. Chirie Sumanasekera
9/17/2018

5. Types of Matter- 2 types:
I. Substances : uniform composition
1. Element : Made of a single type of atom, cannot be broken down further by chemical means, smallest particle that contains the chemical and physical properties of a type of atom [Ex: Silver (Ag), Carbon (C), Hydrogen (H)]
2. Compound: Made of 2 or more types of atoms, can be broken down into elements by chemical means [Ex: salt (NaCl), sugar, pure water, HCl / hydrochloric acid]
II. Mixtures (of substances): Variable composition
1. Homogeneous :uniform composition (Ex: Salt water, stainless steel, tap water)
2. Heterogeneous: variable composition, has distinct phase separation (Ex: granite, chicken and noodle soup, mixed salad)

6. Ways of Separating Mixtures:
1. Filtration: Separation of solid or liquid particles based on size through a membrane or filter (filtering coffee or pasta with a colander)
2. Distillation: Used for separating homogeneous compounds in liquid mixtures based on differing boiling points of individual components (Petroleum and alcohol manufacture)
3. Crystalization: Using a super saturated solution to separate one component as an extremely pure solid in crystal form (Sugar/rock candy)
4. Chromatography: A way to separate a mixture of solid or gas particles dissolved in a liquid based on differing mobilities of individual particles (Pigments of a black sharpie pen)
5. Sublimation: A way to separate a mixture of solid by heat causing one to be removed as a gas [ex: a mixture of ice and dry ice (solid CO2)]
6.Evaporation: Removal of all liquid from a mixture ( Ex. salt from sea water)

7. Ways of Separating Mixtures:
1. Filtration:
2. Distillation:
3. Crystalization:
4. Chromatography:
5. Sublimation:
6. Evaporation

8. Filtration

9. Distillation:

10. Chromatography:

11. _Summary:
Substances (uniform composition): Elements and compounds
Mixtures: Homogeneous and heterogeneous
Separation of Mixtures:
1. Filtration:
2. Distillation:
3. Crystalization:
4. Chromatography:
5. Sublimation: