# mr. flisser's science test- 12/10/09

## 51 terms

### density formula

mass/volume=density

### mass formula

density x volume=mass

### volume formula

mass/density=volume

### an object floats

when the object's density is less than the liquid's

### an object sinks

when the object's density is more than the liquid's

### interpolation

hypothesizing data between known points

### extrapolation

hypothesizing data outside the data point you plotted

### celsius-fahrenheit

9/5(degreesC)+32degrees

### fahrenheit-celsius

5/9(degreesF-32degrees)

degreesC+273

### thermometer

instrument that measures temperature

### two kinds of temperature scales

fahrenheit, celsius

### two liquids used in liquid thermometers

mercury, colored alcohol

when heated

when cooled

become smaller

become bigger

### particle theory of matter

states the laws for solids, liquids, and gases

### solid particles

are closely packed together

### liquid particles

are less closely packed together than solids

### gas particles

are least closely packed together

small particles

identical

### the particles in matter

attract one another

### the spaces between the particles are

very large compared to the sizes of the particles themselves

### the particles in matter are

in constant motion

### phase change

change of matter from one phase (solid, liquid, or gas) to another

### melting

change of a solid to a liquid

### melting point

temperature at which a substance changes from the solid phase to the liquid phase

### freezing

change of a liquid into a solid

### freezing point

temperature at which a substance changes from the liquid phase to the solid phase

### vaporization

change of liquid into a gas

### evaporation

vaporization that takes place at the surface of a liquid

### boiling

process in which particles inside a liquid as well as those on the surface of a liquid change to gas

### boiling point

temperature at which a substance changes from the liquid phase to the gas phase

### physical property

characteristic that distinguishes one type of matter from another and can be observed without changing the identity of the substance

### phases

state in which matter can exist: solid, liquid, gas, or plasma

### solid

phase in which matter has a definite shape and volume

### liquid

matter with no definite shape but with a definite volume

### gas

phase in which matter has no definite shape or volume

### crystal

solid in which the particles are arranged in a regular repeating pattern

### plasma

phase in which matter is extremely high in energy and cannot be contained by ordinary matter; very rare on Earth

volume goes down

volume goes up

### when volume goes up

pressure goes down

pressure goes up

### Boyle's Law

inverse relationship between pressure and volume of gas

### Boyle's Law formula

(P1)(V1)=(P2)(V2)

### Charles Law

direct relationship between temperature and volume of a gas

V1/T1=V2/T2

### Combined Gas Law formula

(P1)(V1)/T1=(P2)(V2)/T2

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