Unit 4 (SEE FC) Flashcards

1
Q

Matter

A

Anything that has mass and volume

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

Plasma

A

Found inside stars, add hella heat: gas ➡️ plasma

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

Physical properties

A

Can be observed without altering identity of substance

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

Chemical properties

A

Can’t be observed without altering identity of substance

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

Flammability property

A

Chemical property

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

Color, density property

A

Physical property

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

Melting point property

A

Physical property

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

Physical changes

A

Don’t alter identity of substance, reversible change

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

Chemical change

A

Alter identity of substance, irreversible change

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

Change: Crushing, tearing

A

Physical

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

Change: Burning

A

Chemical

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

Change: melting, freezing

A

Physical

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

Change: rusting

A

Chemical

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

Physical/ Chemical changes on molecular composition

A

Physical: Change in physical appearance, NOT molecular composition
Chemical: Change in molecular composition, different substance from

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

Law of Conservation of Mass

A

Mass is neither created nor destroyed in a CHEMICAL reaction

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

Antoine Lavoisier

A

Performed experiments to prove that TOTAL MASS doesn’t change during ANY CHEMICAL REACTION.

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

Pure/ Impure substances

A

Pure: Elements, Compounds
Impure: Mixtures

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

Compound

A
  • Contains 2+ elements bound together/ in fixed proportion

- Separated chemically

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

Can compounds be broken down into elements?

A

YES, compounds CAN be broken down into elements

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

Mixture

A
  • Physically intermingled blend of 2+ substances

- Can be separated PHYSICALLY

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

Heterogeneous mixture

A

Mixture that has VISIBLY different parts

22
Q

Homogeneous

A
  • Solution, doesn’t contain visibly different parts

- Uniform

23
Q

Mixture: Milk colloids

A

Heterogeneous

24
Q

Air

A

Homogeneous

25
Gasoline
Homogeneous
26
Metal alloys (steel)
Homogeneous
27
Glass
Homogeneous
28
Alloy
Mixture of metals
29
How are mixtures/ compounds separated?
Mixtures: physically Compound: chemically
30
Mixture examples (4)
Mixture examples: Filtration, chromatography (Rf values), distillation, crystallization.
31
Solids
Molecules w/ definite shape and volume in fixed positions
32
Liquids and Gas
Assume shape/ volume of container
33
Adding more energy
Solid➡️Liquid➡️Gas➡️Plasma
34
Gas ➡️ Solid
Deposition
35
Solid ➡️ Gas
Sublimation
36
STP
Standard temperature and pressure
37
STP Examples
- 32*F, 1*C, 1 atmosphere
38
Boiling point of water
100*C | 212*F
39
Endothermic Reaction
Heat removed from surroundings, and added to endothermic reaction
40
Exothermic Reaction
Heat added to surroundings, and removed from exothermic reaction.
41
Calorie
The amount of heat to raise 1 gram of WATER by 1*C
42
Specific heat
The amount of heat to raise 1 gram of ANY SUBSTANCE by 1*C.
43
Calorimeter
Measures the specific heat of a substance by measuring a change in WATER temperature
44
Relationship between energy + matter
Changes in matter ➡️ changes in energy
45
Energy
The capacity to do work/ release heat
46
Kinetic energy
Motion ➡️ Temperature change
47
Potential Energy
Stored energy ➡️ no temperature change
48
Thermal energy
The total of all the kinetic and potential energy of ENTIRE SUBSTANCE
49
Heat vs. Temperature
Heat: the FLOW of thermal energy from 1 object to another Temperature: Measures KINETIC energy
50
Heat is always flows from..
Heat always flows from warmer ➡️ cooler objects
51
Unit for heat
J (joules)
52
1 calorie = ___ Joules
1 calorie = 4.184 Joules