| A | B |
|---|
| physical property | any characteristic of a material you can observe w/out changing it |
| physical change | a change in size, shape, or state of matter |
| chemical change | a change of one substance in a material to a different substance |
| chemical property | characteristic of a substance that indicates wether it can undergo a certain chemical change |
| law of conservation of mass | matter is neither created nor destroyed during a chemical change |
| element | atoms in a sample of matter have the same identity |
| compound | two or more elements combined |
| substance | either an element or a compound |
| heterogeneous mixture | mixture where materials can be easily be distinguished |
| homogeneous mixture | where 2 or more substances are evenly spread out |
| solution | another name 4 a homogeneous mixture |
| colloid | never settles-heterogeneous mixture |
| Tyndall effect | scattering of light particles in a mixture |
| suspension | heterogeneous mixture containing a liquid in which visible particles settle |
| buoyant force | basically being able 2 float |
| Archimedes' principle | the b.force on an object is = to the weight of the fluid displaced by the object |
| Pascal's principle | pressure applied to a fluid is transmitted unchanged throughout the fluid |
| Bernolli's principle | as the velocity of a fluid increases, so does the pressure exerted by the fluid |
| Venturi effect | fluids flow faster when forced to flow through narrow spaces |
| Charles's law | volume of a gas increases w/ increasing temp. |
| Boyle's law | if you decrease the volume of a container of gas, the pressure of the gas will increaserm provided the temp. doesn't change |
| pascal | SI unit of pressure |
| pressure | the amount of force exerted per unit of area |
| evaporation | liquid-->gas |
| condensation | gas---->liquid |
| heat of fusion | amount of energy needed to chnage a material from a solid --->liquid |
| heat of vaporization | amount of energy needed to change a material from a liquid--->gas |
| states of matter | solid, liquid, gas, plasma |
| kinetic theory of matter | tiny particles in constant motion |
| crystals | partivles in repeating geometric patterns |
| plasma | gaslike mixture of positively and negatively charged particles |
| thermal expansion | matter expands when hot and contracts when cool |
