Science 8Th Trimester 1

Front 1

the steps of the scientific method

Back 1

1. Ask a question
2. Form a hypothosis
3. Test it
4. Analyze data
5. Draw a conclusion
6. Communicate results

Front 2

what is the scientific method?

Back 2

the steps a scientist takes to find the answer to a question

Front 3

what is a hypothesis?

Back 3

an educated guess

Front 4

Units for distance/length/height?

Back 4

meters

Front 5

units for mass

Back 5

grams

Front 6

units for volume

Back 6

liters

Front 7

King Henry's ladder

Back 7

kilo, hecta, deca, base, deci, centi, mili

Front 8

for liquids you determine the volume by reading the bottom of the?

Back 8

meniscus

Front 9

for solids it is filled with a specific volume of water, the solid is added to this volume, and the difference in the volume is recorded. what is this process called?

Back 9

water displacement

Front 10

matter

Back 10

anything that has a mass and takes up space

Front 11

mass

Back 11

the amount of matter in an object

Front 12

volume

Back 12

how much space an object takes up

Front 13

calculation for density?

Back 13

m/v=d

Front 14

weight

Back 14

the gravitational force of an object

Front 15

atom

Back 15

a basic particle from which a molecule is made

Front 16

endothermic

Back 16

energy is absorbed

Front 17

exothermic

Back 17

energy is released

Front 18

element

Back 18

a substance that can't be broken down into any substance by physical and chemical means

Front 19

compound

Back 19

has 2 or more elements

Front 20

mixture

Back 20

two substances mixed together but not chemically combined

Front 21

law of conservation of mass

Back 21

nothing is added or lost, just rearranged

Front 22

thermal energy

Back 22

the total motion of all particle in an object

Front 23

how do you find the density of a regular shaped object

Back 23

measuring with a metric ruler

Front 24

what are 2 differences with mass and weight?

Back 24

mass does not change, but weight depends on where you are. weight is measure of gravitational force and mass in the amount of matter in an object.

Front 25

chemical or physical property?
solubility.

Back 25

physical

Front 26

chemical or physical property?
state

Back 26

physical

Front 27

chemical or physical property?
density

Back 27

physical

Front 28

chemical or physical property?
volume

Back 28

physical

Front 29

chemical or physical property?
reactivity

Back 29

chemical

Front 30

chemical or physical property?
flexibility

Back 30

physical

Front 31

chemical or physical property?
flammability

Back 31

chemical

Front 32

physical or chemical change?
melting

Back 32

physical

Front 33

physical or chemical change?
change in color or odor

Back 33

chemical

Front 34

physical or chemical change?
bubbling/fizzing

Back 34

chemical

Front 35

physical or chemical change?
change of state

Back 35

physical

Front 36

physical or chemical change?
rusting

Back 36

chemical

Front 37

physical or chemical change?
tarnishing

Back 37

chemical

Front 38

physical or chemical change?
crushing

Back 38

physical

Front 39

physical or chemical change?
sour milk

Back 39

chemical

Front 40

3 things that show a chemical change may be occurring?

Back 40

different color, odor, bubbling, sound, light

Front 41

5 ways to separate a mixture

Back 41

seave, filter, pick by hand, magnetism, centrifuge

Front 42

what are two types of mixtures?

Back 42

homogeneous and heterogeneous

Front 43

how do the 2 types of mixtures differ?

Back 43

homogeneous is when mixtures easily blend and combine together, heterogeneous is when you can see the difference is the two mixtures and i doesn't blend easily

Front 44

mixture, element, or compound?
water

Back 44

compound

Front 45

mixture, element, or compound?
air

Back 45

mixture

Front 46

mixture, element, or compound?
salt

Back 46

compound

Front 47

mixture, element, or compound?
coffee

Back 47

mixture

Front 48

mixture, element, or compound?
carbon dioxide

Back 48

compund

Front 49

mixture, element, or compound?
cake batter

Back 49

mixture

Front 50

mixture, element, or compound?
iron

Back 50

element

Front 51

mixture, element, or compound?
sprite

Back 51

mixture

Front 52

mixture, element, or compound?
nitrogen

Back 52

element

Front 53

mixture, element, or compound?
soil

Back 53

mixture

Front 54

describe particle arrangement and motion in a solid

Back 54

very tight, close together. moves in place, vibrates

Front 55

describe particle arrangement and motion in a liquid

Back 55

close but can still slowly move around while bumping into each other

Front 56

describe particle arrangement and motion in a gas

Back 56

spread out, moving rapidly

Front 57

describe the shape and volume of a solid

Back 57

a definite shape and volume

Front 58

describe the shape and volume of a liquid

Back 58

an indefinite shape and a definite volume

Front 59

describe the shape and volume of a gas

Back 59

indefinite shape and volume

Front 60

what are 2 types of solids?

Back 60

crystalline and amorphous

Front 61

how do the 2 types of solids differ?

Back 61

crystalline has no specific pattern of particles and no specific melting point and amorphous has a specific pattern of particles and a specific melting point

Front 62

viscosity

Back 62

a liquid's resistance to flow

Front 63

surface tension

Back 63

force among molecules in a liquid that brings molecules on a surface close together

Front 64

fluid

Back 64

a substance that flows

Front 65

pressure

Back 65

force/area

Front 66

charles law and a example

Back 66

when temperature increases/decreases so does the volume like a hot air balloon

Front 67

boyles law and a example

Back 67

when pressure goes up, volume goes down or when pressure goes down, volume goes up. like bubbles under water while scuba diving get bigger as they rise to the top

Front 68

change of state

Back 68

when a solid turns into a liquid or a gas, when a liquid turns into a solid or a gas, when a gas turns into a liquid

Front 69

what is the correct term for the following change of state?
a solid to a liquid

Back 69

melting

Front 70

what is the correct term for the following change of state?
liquid to a gas

Back 70

evaporation

Front 71

what is the correct term for the following change of state?gas to a liquid

Back 71

condensation

Front 72

what is the correct term for the following change of state?
liquid to a solid

Back 72

freezing

Front 73

what is the correct term for the following change of state?
solid to a gas

Back 73

sublimation

Front 74

what happens to the change in particles as they change state?

Back 74

they either get slower or faster and closer or more separated

Front 75

what are two types of vaporization?

Back 75

evaporation and boiling

Front 76

how do the 2 types of vaporization differ?

Back 76

evaporation is when a water turns into a gas and boiling just bubbles as it gets hotter and it needs to be hotter then evaporation