Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
MATTER |
anything that occupies space and has mass |
|
|
MOLECULES |
two or more atoms joined to one another |
|
|
CRYSTALLINE SOLID |
atoms or molecules arrange in geometric patterns with long-range, repeating order |
|
|
AMORPHOUS SOLID |
atoms or molecules do not have long-range order |
|
|
SOLID |
-atoms vibrate around fixed point -atoms are close together -definite shape -definite volume -incompressible |
|
|
LIQUID |
-atoms move freely -atoms are close together - indefinite shape -definite volume -incompressible |
|
|
GAS |
-atoms move freely -atoms are far apart -indefinite shape -indefinite volume -compressible |
|
|
PURE SUBSTANCE |
composed of only one type of atom or molecule |
|
|
MIXTURE |
composed of two or more diff. types of atoms or molecules combined in variable proportions. |
|
|
COMPOUND |
a substance composed of two or more elements in fixed definite proportions. |
|
|
HETEROGENEOUS MIXTURE |
composition varies from one region to another |
|
|
HOMOGENEOUS MIXTURE |
composition is the same throughout |
|
|
PHYSICAL CHANGE |
a change that a substance displays without changing its composition only its appearance |
|
|
CHEMICAL CHANGE |
a change that a substance displays only throughout changing it composition |
|
|
KINETIC ENERGY |
energy associated with motion |
|
|
POTENTIAL ENERGY |
energy associated with position or composition |
|
|
EXOTHERMIC REACTION |
release energy (become colder) |
|
|
ENDOTHERMIC REACTION |
absorb energy (heat up) |
|
|
TEMPERATURE |
the measure of a substances thermal energy |
|
|
HEAT |
the transfer or exchange of thermal energy |
|
|
EQUATION TO FIND HEAT |
Q = M x C x T |
