Classifying Matter.pptx

A description of how to classify matter into pure substances and mixtures, with further classification of the types of mixtures.

1. Classifying Matter

2. Matter Matter is anything that has mass and takes up space . Mass is a measure of the amount of matter in an object and is measured in units such as grams and kilograms. Volume is a measure of the amount of space an object takes up, and is measured in mL, L, or cubic units for solids. All matter is made up of tiny particles . All matter can be classified as a pure substance or a mixture .

3. Matter???

4. Pure Substances Pure substances have only one type of particle . The properties of a pure substance are always the same. Example: colour , boiling point, melting point

5. Two Types of Pure Substances: Element: only one type of particle Example- Carbon, Hydrogen, Nitrogen (anything on the periodic table !)

6. 2. Compounds: made from 2 or more elements that are chemically combined in a fixed ratio . Examples- sugar, water, carbon dioxide

7. Mixtures Two or more substance that are not chemically combined. Do not have a fixed composition. Do not have constant properties. Example- milk, coffee, air

8. Element, Compound or Mixture?

9. Types of Mixtures Mixtures are a type of matter that are not pure substances. There are 3 types of mixtures:

10. 1. Mechanical Mixture The different substances that make up the mixture are visible . Also called heterogeneous mixtures. Example: soil, soup.

11. 2. Solution The different particles that make up the mixture are not visible . Will not eventually settle out. Also called a homogenous mixture. Example: coffee, tea

12. 3. Suspension The tiny particles of one substance are held within another to create a cloudy mixture. Can be separated. Example: tomato juice

13. Which type of mixture?

14. Assignment Page 127- “4.1 Check and Reflect” #2,3,4,7

15. Properties of Matter Chemical property: can only be observed when a chemical change takes place Include flammability, gas being produced, etc. Physical property: characteristics of a substance that can be observed without a change taking place Include color, shape, texture