Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

my study decks > Science Final > Flashcards

Science Final Flashcards

1
Q

definition of matter

A

the stuff that makes up both living and nonliving things

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

definition of mass

A

something with no definite shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

definition of volume

A

anything that takes up space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

definiton of weight

A

gravatational pull on mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

definition of density

A

the amount of mass in a specific obeject

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the formula for density

A

d=m/v

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the formula for volume

A

l⋅w⋅h

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what are the 4 phases of matter

A

solid, liquid, gas, plasma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is molecular activity

A

the movement/action of a molecule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is molecular distance

A

the distance between molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is molecular attraction

A

attraction between molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how does molecular distance effect molecular activity and attraction

A

the farther molecules are from each other, they will move faster and attraction will be higher

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is kinetic energy

A

energy that an object already has

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is potential energy

A

energy that an object will eventally have energy (ex. wood + fire)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what happens to kinetic energy during a state change

A

it stays the same but potential energy changes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is gravity

A

a force of attraction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what are the 6 processes that allow matter to change state

A

melting, freezing, sublimation, depostition, condensation, vaporization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is vaporization

A

liquid or solid into a gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what is evaporation

A

liquid into a gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what is boiling

A

when a liquid is heated to its boiling point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

how to find volume through displacement

A

water with object - water without

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

why do liquids flow

A

because the space between molecules is large, and molecular attraction is small.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

why do gases change their shape and volume

A

because there is a lot of space between molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what happens to molecular activity when you add heat

A

molecules move faster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what is an ionic bond

A

a loss or gain of electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

what is a covelent bond

A

the sharing of electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

which element controls a bond

A

the nonmetal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

what is atomic radius

A

the distance from the nucleus to the valence shell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

how to name an ionic compound

A

metal or nonmetal

30
Q

how do you name a metal

A

gain ions, loose electrons, groups 1,2,3, more than 4 valence electrons

31
Q

how do you name a nonmetal

A

looses ions, gains electrons, groups 5,6,7, less than 4 valence electrons

32
Q

when does and ionic bond form

A

when electrons are lost or gained

33
Q

when does an covelant bond form

A

when electrons are shared

34
Q

what is the charge on a nucleus

35
Q

what is the charge on energy shells

36
Q

why do electrons stay on the energy shell

A

because of the attractive force

37
Q

how does atomic radius affect bonding

A

the more atoms, the more shells which creates a wider distance between the valence shell and nucleus

38
Q

why do ions form in ionic bonds

A

because of the opposite charges on the ions

39
Q

what are the diatomic molcules

A

flourine, bromine, chlorine, iodine, hydrogen, oxygen, nitrogen,

40
Q

what are the 4 reactions

A

synthesis, decomposition, single replacement, double replacement

41
Q

what is the formula for synthesis

A

A + B -> AB

42
Q

what is the formula for decompostion

A

AB -> A + B

43
Q

what is the formula for single replacement

A

AB + C -> AC + B

44
Q

what is the formula for double replacement

A

AB + CD -> AD + CB

45
Q

what is endothermic

A

spontaneous, energy of products is greater than energy of reactants

46
Q

what is exothermic

A

nonspontaneous, energy of products is less than energy of reactants

47
Q

how do you calculate heat of reaction

A

heat of reaction = product + reactant

48
Q

how to calculate energy of the activated complex

A

activated complex - reactant

49
Q

what are 4 factors that affect rate of reaction

A

reactant concentration, surface area, temperature, catalysts

50
Q

how does an inhibitor affect a reaction

A

increases activation energy, takes more energy to take place

51
Q

how does a catalyst affect a reaction

A

speeds up a reaction, gives more energy to system, lowers activation energy

52
Q

what is the importance of activated complex

A

it changes a reactant to a product

53
Q

what does a posting heat of reaction mean

A

joules are taken in from the environment

54
Q

what is polarity

A

uneven charge distribution on a covalent

55
Q

why is water polar

A

because it is asymmetrical

56
Q

what does nonpolar mean

A

even charge distribution, symmetric, atoms are the same

57
Q

what is an element

A

a pure substance that homogeneous throughout only one kind of matter present

58
Q

what is a compound

A

two or more atoms bonded together in a fixed ratio

59
Q

what is a mixture

A

physical, no bonds breaking

60
Q

what are the different types of solutions

A

suspensions, colloids

61
Q

what is a solute

A

what is being dissolved

62
Q

what is a solvent

A

what is doing the dissolving

63
Q

how does solubility change with temperature

A

decreasing temperature decreases solubility of a solute

64
Q

name one example of a suspension

A

possible answers: oil + vinegar, chocolate milk, sand + water

65
Q

name one example of a colloid

A

possible answers: mayo, whipped cream

66
Q

what are the 4 ways to change solubility of a solute

A

temperature, pressure, molecular size, polarity

67
Q

what makes a solution concentrated

A

it has a large amount of solute dissolved

68
Q

how do you calculate molarity

A

molecular mass/1 liter of solvent

69
Q

what is a suspension

A

when solute is suspended in solvent for a period of time

70
Q

what is a colloid

A

a kind of suspension where the solute is held in the solvent for and extended time period

my study decks (36 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions