Nature of Matter

1. Mixtures-is a substance containing two or more elements that are in close in contact and mixed in any proportion.

1.1. Homogenous

1.1.1. uniform

1.1.2. no visible boundries oof separtion

1.1.3. Eg- salt and water

1.2. Heterogenous

1.2.1. non uniform

1.2.2. visible boundries of separtion

1.2.3. Eg- water and sand

2. Solution- a homogenous substance made of two or more substances

2.1. Solvent- substance in which solute gets dissolved

2.2. Types of solutions

2.2.1. aqueous solution

2.2.2. non- aqueous solution

2.2.3. saturated solution

2.2.4. unsaturated solution

2.2.5. Supersaturated solution

2.3. Solute- substance gets dissolved in solvent

2.3.1. True solutions

2.3.2. Colloids

2.3.3. suspensions

3. Tyndall effect

3.1. A beam of light laser, invisible in clear air or pure water, will trace a path through a genuine colloidal suspension.

4. Electrophoresis

4.1. It is the motion of dispersed particles to a fluid under the influence of a spacially uniform electric field

5. Elements- pure substance which cannot be split up into two or more simpler substances by any chemicl or physical means

5.1. Metals

5.2. Non- Metals

5.3. Metalloids

6. Compounds- pure substance formed by two or more elements combined together in definete proportionby weight.

6.1. connot be separated by mechanical or physical process

6.2. properties differ from constituent elements.

6.3. during formation energy is involved

6.4. Constituent element is presennt in definete ratio by weight

6.5. Has fixed melting and boiling point

6.6. Is a homogenous substance

7. Brownian movement

7.1. Particles in both liquids and gases move randomly.