Brainscape's Knowledge GenomeTM

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


See full index

Chemistry > Unit 1 Test > Flashcards

Unit 1 Test Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

type of heterogeneous mixture that seems homogeneous bc it’s stirred up due to wind or a current

A

suspension

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

type of heterogeneous mixture with two solids

A

mechanical

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

same throughout; all samples have the same chemical and physical properties

A

homogeneous

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

samples have different properties; substances will settle out

A

heterogeneous

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

change in location, mixture, or state

A

physical change

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

change in identity of substance

A

chemical change

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

change in nucleus of atoms

A

nuclear

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

solid to gas

A

sublimation

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

solid to liquid

A

melting

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

liquid to gas

A

boiling

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

gas to solid

A

deposition

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

gas to liquid

A

condensation

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

liquid to solid

A

freezing

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

3 things that sublime

A

dry ice
iodine
moth balls(paradichlorobenzene)

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

energy in

A

endothermic

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

examples of endothermic

A

melting, boiling, sublimation

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

energy out

A

exothermic

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

examples of exothermic

A

condensation, freezing, deposition

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

solubility is a property of what type of change

A

physical change

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

substances that dissolve in water

A

sugar, baking soda, salt

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

substances that dissolve in oily solvents like toluene, gasoline, turpentine, or carbon tetrachloride

A

tar, asphalt, waxes, oils, fats, dirt, iodine, plastic

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

all nitrates will dissolve in what?

A

water

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

most ionic compounds…?

A

dissolve

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

all chlorides are soluble except…?

A

silver chloride and lead chloride

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

things that won’t dissolve in either water or gas

A

metal, charcoal, wood, calcium carbonate(shells, limestone, chalk, and marble)

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

what are some examples of calcium carbonate

A

shells, limestone, chalk, and marble

27
Q

separations are what type of change

A

physical change

28
Q

what processes can separate non volatile substances from water

A

evaporation and boiling

29
Q

what can separate two volatile substances

A

distillation

30
Q

something that will evaporate easily

A

volatile substance

31
Q

4 signs of chemical change

A

change in color
change in odor
formation of precipitate
formation of gas

32
Q

example of formation of precipitate

A

sodium chloride mixed with silver nitrate to create silver chloride

33
Q

what is a precipitate

A

a solid that forms and settles out of a liquid mixture

34
Q

example of a change in color

A

copper in nitric acid turns green

35
Q

example of a change in odor

A

cooking or rotting

36
Q

example of a formation of a gas

A

hydrochloric acid + magnesium = hydrogen and magnesium chloride

37
Q

a self correcting process humans use to study, explain and document natural phenomena, which can be developed into technology

A

scientific method

38
Q

an explanation of a group of observations and experimental data; it may change over time

A

theory

39
Q

a mathematical statement of fact based upon experimental results; doesn’t change over time

A

scientific law

40
Q

phlogiston model

A
  • things that can’t burn have none
  • things that can burn do have it
  • it should weigh less after burning
41
Q

common example that supports the phlogiston model

A

burning paper/ wood in an open container

42
Q

fuel= ash + phlogiston

A

phlogiston model

43
Q

fuel + oxygen = oxides

A

modern combustion theory

44
Q

weighs more after burning due to addition of oxygen

A

modern combustion theory

45
Q

what the scientist adjust from trial to trial

A

independent variable

46
Q

what the scientist measures (the effect)

A

dependent variable

47
Q

any physical change or chemical reaction, mass is conserved

A

law of conservation of mass

48
Q

is the formation of dew on grass in the morning chemical or physical?

A

physical bc it can be undone by evaporation

49
Q

what type of process is condensation?

A

exothermic

50
Q

what type of property is color

A

physical

51
Q

name an element

A

gold
silver
iron
potassium

52
Q

what is the classification of gold

A

homogeneous pure substance

53
Q

name a compound

A

Carbon dioxide
water
salt

54
Q

name a homogeneous mixture

A

salt water, air

55
Q

name a heterogeneous mixture

A

muddy river water, orange juice w pulp

56
Q

what reactant is always needed for combustion

A

oxygen

57
Q

what product is always formed in combustion

A

oxides

58
Q

difference between an element and a compound

A

elements cannot be broken down, but compounds can be broken down by chemical means

59
Q

similarity between an element and a compound

A

both are homogeneous and pure substances

60
Q

what can mixtures be broken down by

A

physical means

61
Q

what can compounds be broken down by

A

chemical means

62
Q

classification of oxygen

A

homogeneous element/ compound

63
Q

classification of air

A

homogeneous mixture

64
Q

big molecules that can be either homogenous of heterogeneous

A

colloid

Chemistry (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions