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What is matter?
something that has mass
anything that has mass and takes up space
what's the matter with you?
What are the characteristics of solid matter?
takes the shape of any container
molecules are packed closely together
objects have a definite shape
have a definite shape and molecules are packed closely together
Which describes liquid matter?
has a definite volume but no definite shape, takes the shape of every container
has a definite volume
it is wet
molecules are packed tightly together
Which description mostly explains a gas?
no specific shape
not a certain volume
it is all over
molecules move around freely, not tightly packed, no specific volume nor shape
What needs to be present in order for one phase to change from one to another?
increase in kinetic energy, resulting in temperature increasing
What is an example of evaporation?
rain water accumulating in a rain barrel
a puddle going away
leaves turning green
a ball rolling downhill
Which is NOT an example of condensation?
dew collecting on the grass in the morning
clouds filling with water vapor
water forming on the side of the glass of ice water
an oasis drying up in the desert
What describes "freezing" matter?
molecules moving rapidly
molecules not in motion and temperatures decreasing
molecules in motion
The phase change sublimation is when matter changes from ....
solid turns to a liquid
solid turns directly to a gas
gas turns to a solid
liquid turns to a gas
In order for something to melt...
the objects temperature needs to be lowered
the molecules slow down to a "stand still"
you turn the air conditioner on
it requires the object's melting point to be reached