Physical Properties of matter

1. Physical Properties of matter Chapter 11

2. elements • Elements are the basic building blocks of matter. • A little over 100 elements combine in many different ways to form everything around us.

3. Physical properties of matter weight mass Amount of matter in an object Doesn’t change even if the pull of gravity changes • Measures how hard gravity is pulling on an object • Changes as the pull of gravity changes

4. volume • Amount of space an object takes up • Solids: length x width x height • Liquids: Use a graduated cylinder

5. To find the volume of a solid that has an irregular shape, use liquid displacement:

6. Density • Which weighs more, a pound of lead, or a pound of feathers? • Which weighs more, a box of lead, or the same sized box of feathers? • Lead has a higher density than feathers, which means it weighs more for its size. Density is the amount of mass in a given unit of volume. • If two objects are the same volume, the heavier one has the higher density.

7. buoyancy • Buoyancy is the ability to float. • An object will float if its density is less than that of the liquid. If it is more dense than the liquid, it will sink.

9. Mixtures and solutions

10. mixtures • Different materials are placed together, but they keep their own properties. • Can be separated again

11. solutions • A type of mixture in which one substance dissolves into something else. The substances are spread evenly and will not settle. • Solute: the substance that dissolves into something else (sugar) • Solvent: the substance that does the dissolving (water)

12. Examples of solutions

13. Separating mixtures and solutions