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21 terms

science note cards

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endothermic
gas
liquid gaining energy going up the scale
solid
ex.*melting
exothermic
gas
liquid loose energy going down the scale
solid
ex.* freezing somethin ice cubes
melting
solid -> liquid
freezing
liquid -> solid
vaporizing
liquid->gas
*water vapor
sublimation
solid-> gas *can be dry ice, rock salt, air fresheners, etc.
charles's law
if the temprature increases the volume increaces
what unitcan wieght be expressed?
newtons and pounds (lbs)
what unit can mass be measured in ?
grams, and kilograms
liquid volume can be expressed in what???
l , mL
solid volume can be expressed in what???
m3,cm3,in3,ft3
what are the three formulas used for the topic of density???
D=m+v
M=d*v
V=m/d
what is the formula to find the volume of a retagle???
LWH
what is volume???
volume is the amount taken up, or occupied by an object
what is mass???
mass is the amount of matter something is made up of
what is weight???
weight is the gravitational force exerted from and object
what is the diffrece of mass and weight
???
mass- is measured on a tripple beam ballance
weight - is measured on a spring scale
what are phisical changes?????
when matter can be oberved or measured without changing the compisition of the object
what are chemical chages???
a chemical change is the abbility to change into a whole new substance with a diffrent state
ex. wood burning in to ash, smoke
how can you find the volume of a irregular object ???
such as gas, you know a volume of a container, use that container open the lid then close it and you have a gass'(air) volume
what is a miniscus???
a graduated cilinder measuring a volume of a small object such as a marble

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