1. Physical and Chemical Properties

2. Matter
Anything that has mass and takes up space

3. Physical Properties
Any property of matter that can be observed or measured without changing the identity of matter being studied

4. Physical Properties
Typically, physical properties are things that you can detect with your senses (taste, hear, smell, see, or feel)
Some physical properties size, mass, volume, length, shape, depend on the amount of substance present

5. Physical Change
Substances are not altered chemically, merely changed to another phase or separated, or combined.
Alteration of a substance, but substance remains the same
Ex: Water to Ice
Whole apple to half apple

6. Chemical Properties
Properties that are measured and observed only during a chemical reaction

7. Chemical Properties
Chemical properties show the potential of matter to go through some chemical changes or reactions can only be observed by changing the identity of the substance.

8. Chemical Change
Substances are altered chemically and display different physical and chemical properties after the change.
Two substances interact to form another substance.
Ex: water to peroxide

9. Physical Properties

10. The rate at which a substance transfers heat
Thermal Conductivity
The rate at which a substance transfers heat

11. Magnetism
Property of some materials to attract iron or objects containing iron

12. The ability of a substance to dissolve in another substance
Solubility
The ability of a substance to dissolve in another substance

13. State
The physical form in which a substance exists, such as a solid, liquid, or gas.

14. The ability of a substance to be pulled into a wire.
Ductility
The ability of a substance to be pulled into a wire.

15. Electrical Conductivity
Describes how freely charges can move in a material.

16. Malleability
The ability of a substance to be rolled or pounded into thin sheets.

17. Melting point
The temperature at which a substance changes from a solid to a liquid at a given pressure
water = 0oC
32°F

18. Boiling point
The temperature at which a substance changes from a liquid to a gas at a given pressure
water = 100oC
212°F

19. Specific Heat
The amount of energy needed to change the temperature of 1 kg of a substance by 1°C

20. Density
Is the mass per unit volume of a substance
D=M V

21. Color
Used to identify a substance
Observed
Absence of color

22. Identify a substance by the way it smells or does not smell
Odor
Identify a substance by the way it smells or does not smell

23. Evidence of Physical Change
Change in state
Example: Melting of cheese
Evaporation of water
Sublimation of air freshener
Change in size
Example Cutting, Tearing,
and Breaking
Change in shape
Example Dissolving,
Stretching or Wrinkling

24. Chemical Properties

25. Flammability
The ability of a substance to burn.

26. Combustibility
Is the amount of energy that is released as heat when a substance is burned with oxygen.

27. Reactivity
The ability of two or more substance to combine and form one or more new substance

28. Reactivity Oxygen Quickly produce light and heat
Slowly produces rust on iron and apples turn brown

29. Reactivity
Acid
A substance ability to react with an acid and form a new substance.

30. Indicators of a chemical change:
Evolution of Light
Evolution of Heat
Temperature Change
Evolution of gas
Bubbles
Color Change
Oxygen reacts with iron and turns it red
Formation of precipitate
2 solution are added together and form a solid

31. Indicators of Chemical Change
Production of Odor
Evolution of Light
When through the change in chemical composition a new odor is created.
This does not include an odor that is present before any chemical reaction
Ex: Perfume
When the change in chemical composition produces light
Ex: fireworks

32. Indicators of a Chemical Change
Formation of Precipitate
Color Change
When two or more liquid substances combine sometimes an insoluble solid substance will form.
The color of some substance will change when their chemical composition changes.
This does not include mixing colors or actual colors.

33. Indicators of Chemical Change
Evolution of Temperature
Evolution of Gas
Every chemical reaction involves a change in energy/temperature.
An endothermic reaction occurs when a substance absorbs heat
An exothermic reaction occurs when heat is released.
When gas or gas bubbles are seen it means that a new substance has been created.
Gas can be above or below the surface of a substance

34. Examples of a Chemical Changes
Burning
Digesting food
Reacting with other substances
A chemical change is called a chemical reaction