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whats the matter
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28
Science
7th Grade
09/24/2009

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Term
WHAT IS MATTER
Definition
EVERYTHING THAT HAS MASS AND TAKES UP SPACE
Term
WHAT ARE PHYSICAL PROPERTIES
Definition
THINGS THAT CAN BE DETERMINED WITHOUT CHANGING THE MATER
Term
list some physical properties of matter
Definition
color,see,hear,smell and measure
Term
what is mass
Definition
the amount of matter in an object
Term
what is weight
Definition
how hard gravity pulls down on an object down
Term
what is the differance between mass and weight
Definition
weight can change mass cant change
Term
what is volume
Definition
the amount of space taken up by an object
Term
what is density
Definition
the amunt of matter in a given volume
Term
what is the formula to calculate density
Definition
matter divided by volume
Term
what is boiling point
Definition
the point that a liquid becomes a gas
Term
what is melting point
Definition
the point that a solid becomes a liquid
Term
malleability and ductility are
Definition
malleability is being able to be pounded into a thin sheet and duct. is the ability to be streched into a string or wire
Term
how many phases of matter are known today
Definition
solid,liqid,gas and plasma which is four
Term
discribe a solid
Definition
it is a stage were the matter is frozen state its molecules are tightly packed together
Term
describe a liquid
Definition
it is at its melted state the molacules are a little looser than a solid
Term
describe a gas
Definition
it is free and the molecules have no limits and are very excited
Term
what is plasma
Definition
super heated gas
Term
describe how adding or subtracting energy changes the phase
Definition
it is like if you add heat energy to water it becomes a gas and if subtract heat energy (freeze) it will turn the gas back to water
Term
what are chemical properties
Definition
Chemical Properties describe matter based on its ability to change into a new kind of matter with different properties.
Term
what are some common chemical properties
Definition
flamibility,rust,reacts to water,reacts to acid
Term
what is a physical change
Definition
something that changes the form of a substance but not what it is
Term
what is a chemical change
Definition
when a substance meets another substance and changes
Term
list some chemical and physical changes
Definition
flammability,crushing,breaking into pieces,rust,reacts to water,
Term
what is the freezing point
Definition
the temp. that a liquid turns to a solid
Term
what is vaporization
Definition
the temp where a liquid becomes a gas
Term
what is condensation
Definition
the temp where a gas becomes a liquid
Term
what is evaperation
Definition
the the temp where liquid becomes a gas
Term
list some examples of chemical and physical changes
Definition
a lock rusting,ice melting,water freezing
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