1. Chemistry Chemical/Physical Properties & Changes

2. What is Matter? Think and Discuss Matter: anything that has mass and takes up space Mass – the amount of matter in something Volume – the amount of space something occupies

3. What is Matter? Matter is any substance that has both mass and volume. Almost everything around us is matter including air and other gases.

4. What is a property? Property: a characteristic of a substance that can be observed

5. Types of Properties 1.Chemical Properties 2.Physical Properties  Quantitative vs. Qualitative Properties

6. Properties Chemical Property – Describes the ability of a substance to form one or more different substances (ability to participate in chemical reactions) –The substance is combustible (will burn) –The substance is flammable or reactive Physical Property-The characteristics of a substance that does not involve a chemical change. –Height, weight, colour, etc. –Includes qualitative and quantitative properties

7. Types of Properties Qualitative properties are descriptive properties. –Example- The car is red. Quantatitive properties involve measurements

8. Physical Properties continued….. luster malleability: the ability to be hammered into a thin sheet ductility: the ability to be stretched into a wire melting point boiling point density solubility specific heat

9. Definition of Change Change: the act of altering a substance

10. Physical change : a change that occurs that does not change the identity of the substance –Melting ice( change in state or phase) –Freezing Kool-aid –Tearing paper –Boiling water

11. Chemical change: a change that occurs causing the identity of the substance to change –Burning –Digesting food –Reacting with other substances A chemical change is called a chemical reaction

12. Chemical Change Clues 1.A color change occurs. 2. An odor is produced 3. Formation of bubbles 4.Heat is absorbed or given off. 5.Formation of a precipitate (solid) Keep in mind these are only clues that a chemical change may have taken place. Proof still depends on a new substance being formed with new properties.

13. Is it a Physical or Chemical Change? The following video will help explain the differences between Physical and Chemical Changes.

14. https://www.youtube.com/watch?v=zbmLMm2Mpa8