Physical Science Assessment Form Ch. 3,4, & 11

Front 1

the physical forms that a substance can exist in

Back 1

states of matter

Front 2

made up of atoms and molecules, always in motion and always bumping into each other, or interacting

Back 2

matter

Front 3

particles do not move fast, just vibrate, close together, small energy

Back 3

solid

Front 4

move fast enough to overcome some of the attractiom to each other, close together, can slide past each other, some energy

Back 4

liquid

Front 5

move fast enough to overcome almost all attraction, far apart, and move independently, lot of energy

Back 5

gas

Front 6

definite shape and volume

Back 6

solid

Front 7

very orderly

Back 7

crystalline solid

Front 8

doesn't have definite shape

Back 8

morphous solid

Front 9

definite volume but no definite shape, will take the shape of the container

Back 9

liquid

Front 10

force that acts on the particles at the surface of a liquid

Back 10

surface tension

Front 11

liquid resistance to flow

Back 11

viscosity

Front 12

no definite shape and no definite volume

Back 12

gas

Front 13

how fast the particles are moving

Back 13

temperature

Front 14

the amount of force on a specific area

Back 14

pressure

Front 15

a fixed amount of gas at a constant temp. the volume of the gas is inversly related to the volume

Back 15

Boyle's Law

Front 16

for a fixed amount of gas at a constant pressure the volume and the temp. changes in the same way

Back 16

Charles's Law

Front 17

the change of one state to another

Back 17

change of state

Front 18

when a solid changes directly to a gas

Back 18

sublimation

Front 19

changing from a solid to a liquid

Back 19

melting

Front 20

changing from a liquid to a solid

Back 20

freezing

Front 21

changing from a liquid ro a gas at the substance's boiling point (vaporization)

Back 21

boiling

Front 22

changing from a liquid to a gas at the surface of a liquid (at all temp.)

Back 22

evaporation

Front 23

changing from a gas to a liquid

Back 23

condensation

Front 24

temp. at which a solid changes into a liquid

Back 24

melting point

Front 25

the temp. at which a liquid changes to a gas

Back 25

boiling point

Front 26

matter that has definite chemical and physical properties

Back 26

pure substance

Front 27

matter that contains two or more substances that have different chemical and physical properties; isn't chemically combined; can be separated using physical methods

Back 27

mixture

Front 28

the smallest particle into which an element can be divided and still be the same substance

Back 28

atom

Front 29

positively charged part in the center

Back 29

nucleus

Front 30

in an area around the nucleus

Back 30

electrons

Front 31

three one-hundred-millionths of a centimeter

Back 31

atom

Front 32

made up of protons (positively charged) and electrons (no charge)

Back 32

nucleus

Front 33

negatively charged

Back 33

electrons

Front 34

# of protons

Back 34

Atomic #

Front 35

atom that has the same # of protons but different # of neutrons

Back 35

isotopes

Front 36

atom with a nucleus that woll change overtime; this type of isotope is radioactive

Back 36

unstable atom

Front 37

the sum of protons and neutrons

Back 37

mass #

Front 38

average of all naturally occuring isotopes of that element

Back 38

atomic mass

Front 39

gravitaional force
electromagnetic force
strong force
weak force

Back 39

four forces of atoms

Front 40

able to dissolve in water

Back 40

soluble

Front 41

won't dissolve in water

Back 41

insoluble

Front 42

substance that dissolved

Back 42

solute

Front 43

thing that did the dissolving

Back 43

solvent

Front 44

what forms when a solute and a solvent come together; appears to be a single substance; can be a solid

Back 44

solution

Front 45

solvent in water

Back 45

aqueous

Front 46

distillation
magnet
centrifuge

Back 46

separating mixtures

Front 47

doesn't need to be mixed in a definite ratio

Back 47

components of a mixture

Front 48

the process in which particles of substances separate and spread evenly

Back 48

dissolving

Front 49

solid solutions of metals or nonmetals dissolved in metals

Back 49

alloys

Front 50

particles in a ____ are so small that they never settle out and cannot be removed by filtering

Back 50

solution

Front 51

a measure of the amount of solute dissolved in a solvent

Back 51

concentration

Front 52

can be described as concentrate or dillute but doesn't tell you the specific amounts

Back 52

solutions

Front 53

grams of solute
-----------------------
milliliters of solvent

Back 53

concentration

Front 54

less soluble if the temp. is raised

Back 54

gas

Front 55

a mixture in which particles of a material are disperesed throughout but are large enough to settle out

Back 55

suspension

Front 56

mixture in which the particles are disperesed throughout and are heavy enough to settle out

Back 56

colloid

Front 57

the technique used to separate dyes

Back 57

chromatography

Front 58

the patterns produced on the paper

Back 58

chromatagram