1. Physical and Chemical Properties

2. Physical Property
A characteristic of a substance that does not involve a chemical change density, color, or hardness.
Examples: Color, Shape, Odor, Weight, Volume, Texture, State, and Density.

3. General Physical Properties
Size
Shape
Color
Smell
Weight/Mass
Volume

4. Thermal Conductivity The rate at which a substance transfers heat
Example:

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

6. Magnetism
The property of some materials to attract iron or objects containing iron
Lodestone: its naturally attractive! Yay

7. State/Phase of Matter The physical form in which a substance exists
Either a solid, liquid, or gas.

8. Density
The mass per unit volume of a substance.

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

10. Chemical Property
Describes a substance’s ability to participate in chemical reactions

11. Flammability
The ability of a substance to burn (no really, that’s the entire definition!)

12. Reactivity
The ability of two or more substances to combine and form one or more new substances
Metal +
Oxygen =

13. Comparing Chemical and Physical Properties
Physical Properties are easy to observe. You can measure density or hardness and not change anything. It’s fun!
Chemical Properties are harder to observe, but that’s okay! Just remember that even though wood may not be burning right this second, it is still considered flammable.

14. Evidence of Chemical Reactions
Color Change: an unusual color change can signal that a new substance has formed. In a chemical change blue and yellow may actually turn red! It’s mind blowing.

15. Evidence of Chemical Reaction
A solid may form (Precipitate) from a solution during a chemical reaction
The precipitate is a new or
different substance and doesn’t
dissolve in the solution. Instead
it sinks or floats.

16. Evidences of a Chemical Reaction
A gas is produced and you may see bubbles.
Gas may or may not have an odor.

17. Evidences of a Chemical Reaction
Temperature Change: Hold on to your hats, because this means that you may see a temperature change.
The heat won’t come from an external source though! It will come from the energy from the reaction!

18. Evidences of a Chemical Reaction
With a chemical reaction, the outcome is very difficult, or even impossible to reverse.
Example: Water can melt and go through different state changes. That would be a physical change, but in a chemical reaction the chemical composition would change and wouldn’t be so easy to reverse.