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Elements
Elements
16
Science
7th Grade
12/07/2011

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Cards

Term
Name three phases of H2O
Definition

Ice, liquid water, water vapor/steam

 

Term
describe molecules of a solid in three ways
Definition
close together, crystal sturcture, vibrate in place...THINK: OLD PEOPLE!!
Term
which state of matter has the MOST energy?
Definition
gas
Term
steam has ___ energy than water.
Definition
more
Term
Ice has ____ energy than water.
Definition
less
Term
Average temperature of tap water
Definition
18-20 degrees C
Term
solid to a liquid is called
Definition
melting point
Term

T/F:

As ice melts it loses energy.

Definition
False
Term
melting point of ice in Celsius=
Definition
0 degrees C
Term
melting point of ice in Fahrenheit
Definition
32 degrees F
Term

T/F:

Most drastic drop in temperature occurs at end of freezing

Definition
False--Beginning
Term
In freezing, substances ____ energy
Definition
loses
Term
Opposite of melting is
Definition
Freezing
Term

T/F:

All subsstances melt at the same temperature.

Definition
False
Term
freezing point of water in Celsius
Definition
0 degrees C
Term
what is the difference between vaporiztion and evaporation?
Definition
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