 | Term | Definition |
| |
matter |
anything that has volume and space |
| |
volume |
the amount of space an object takes up |
| |
meniscus |
the curve at the liquid's surface when using a graduated cyclinder |
| |
mass |
the amount of matter that something is made of |
| |
gravity |
a force of attraction below ojects that is due to their matter |
| |
weight |
a measure of the gravitational force exerted on an object |
| |
newton |
metric system unit for force (N) weight is expressed in newtons. *If you know mass can calucate weight on earth |
| |
inertia |
tendency of all objects to resist any changes in motion |
| |
physical property |
can be observed or measured without changing identity of the matter (ex: apple is red) |
| |
Density |
the amount of matter in a given space (or volume) |
| |
chemical property |
describe a substance on its ability to change into a new substance with different properties |
| |
physical change |
a change that affects 1 or more physical properties of a substance |
| |
chemical change |
occurs when 1 or more substances are changed into new substances with different properties |
| |
states of matter |
the physical forms in which a substance can exist |
| |
solid |
definate shape and volume |
| |
liquid |
takes shap of container and definate volume |
| |
gas |
changes both shape and volume |
| |
pressure |
amount of force exerted on a given area (# of collisions of particles inside container) |
| |
Boyle's Law |
for a fixed amount of gas at a constant temperature, the volume of a gas decreases as pressure increases |
| |
Charle's Law |
for a fixed amount of gas at a constant pressure, the volume of the gas increases as it's temperature decreases |
| |
Plasma |
does not have definate shape or volume and particles have broken apart |
| |
changes of state |
conversion from one physical form to another |
| |
melting |
solid to liquid |
| |
Freezing |
Liquid to a solid |
| |
Vaporizing |
Liquid to Gas |
| |
Boiling |
Vaporization that occurs throughout a liquid |
| |
Condensation |
Gas to Liquid |
| |
Sublimation |
Solid to Gas |
| |
Mass |
measure amount of matter in an object- ALWAYS constant- Use TB Balance- kg,g,mg |
| |
Weight |
measure gravitational force on object- Varies by location on univ.- spring scale- newtons (N) |
| |
Physical Properties |
Can be observed or measured EX:state, melting, freezing |
| |
Chemical Properties |
Ability to change into new substance ex:flammability |
| |
Physical Changes |
Affects physical properties ex:breaking chalk, melting ice,cutting hair, crushing can |
| |
Chemical Changes |
Changes to new substance with new properties ex: baking a cake, soured milk, burnt wood |
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