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Chemistry 30s > module 1 > Flashcards

module 1 Flashcards

(61 cards)

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1
Q

how many major state of matter is there in the universe

A

4

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2
Q

what is matter

A

anything that takes up space(volume) and has a mass.

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3
Q

What is a property

A

characteristic that we can use to help us identify a person place, or things.

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4
Q

Name 2 type of property

A

Chemical

Physical

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5
Q

What is a chemical property

A

How substance react with other substances

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6
Q

What is a qualitative property

A

Base on descriptive information of of observation of physical characteristic

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7
Q

What is quantitative property

A

properties that are observed and can generally not be measured with a numerical result

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8
Q

Name some physical property

A

Density
Conpressability
Diffusion

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9
Q

What is density

A

The weight for its size

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10
Q

What is compressibility

A

Reduce the space between particle of a specific material

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11
Q

What is diffusion

A

The movement of one substance through an other

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12
Q

What are the common state of matter

A

Solid
Liquid
Gas
Plasma

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13
Q

What are the shape, volume, density, compressibility, diffusion of solid

A 
Define shape
Define volume
Usually very dence
Not easily compressed
Not easily diffused
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14
Q

What are the shape, volume, density, compressibility, diffusion of liquid

A 
Take the shape of its container
Defined volume
Usually less dence than solid
Not easily compressed
Easily diffused
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15
Q

What are the shape, volume, density, compressibility, diffusion of gas

A

Take the shape of its container
Take the volume of its container
Usually much less dence than solid and liquid

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16
Q

What is plasma

A

gaseous misture of positive ions and electrons.

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17
Q

What is the energy of an object in motion called

A

Kinetic energy

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18
Q

Why are gas easily compressible

A

The distance between the particle are much larger than the particle the self

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19
Q

What is intermolecular force

A

The force of attraction between particle

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20
Q

What happen the the speed of particle when temperature increases

A

The speed decreases

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21
Q

What hold 2 seperate particle together

A

Intermolecular force

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22
Q

What could elastic collision cause

A

Loss of energy
Particle have more energy
Energy of the particle stays the same

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23
Q

what does the kinetic molecular theory state when comes to collision between particles and between particles and their container?

A

its perfectly elastic, this means there is no loss of energy

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24
Q

what happen to the kinetic energy of particles when temperature increases

A

it increaes

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25
what is the kinetic energy equation
1/2mv2
26
what is viscosity
the measure of resistance of a liquid to flow
27
what does it mean in reference to intermolecular forces when particles a re held together.
the intermolecular forces must be higher
28
how are gases and plasma alike
- state of matter - made of particles - particle are in constant motion - particles have large spaces between them - particles have very small forces of attraction - no definite shape, not definite volume, easily compressed and diffuse
29
how are gases and plasma different
- gases are atoms or molecule while plasma is made of positive ions and electrons - gases exist easily at room temperature while plasma required large amount of energy.
30
what is a phase
refers to the mixture of states of matter that coexist as physically distinct part of a mixture
31
what is endothermic phases change
those that require energy to be added to the system for the change to take place
32
what is exothermic phase changes
are those in which more energy is released than is required to break bonds
33
what is melting or fusion
solid will change to a liquid when heat is added or absorbed
34
what is evaporation
conversion of a liquid to gas
35
what is boiling
occurs when vaporization take place
36
what is condensation or liquefaction
conversion of a gas to a liquid
37
what is freezing or solidifiation
conversion of a liquid to solid.
38
what happen during freezings or modification in term of energy
energy is released
39
what is sublimation
it occurs when a solid changes directly to a gas without passing through the liquid state
40
what is deposition
opposite of sublimation, conversion to a solid from gas
41
what happen to energy as substance freezes
energy is loss
42
what is it call when both solid and liquid are present
plateau
43
what is happening when a plateau occurs in term of temperature on a graph
its the melting point
44
what is the normal melting point
the temperature a substance melts or freezes at standard pressure
45
what is a characteristic physical property
property that can be used to distinguish one substance from an another.
46
what is evaporation
the conversion from liquid to gas
47
when does eaporation occurs
when some particles on the surface of the liquid have enough energy to overcome the forces of attraction between the liquid particles.
48
what does a particle need to evaporate from the remainder of the liquid
have enough energy
49
what is evaporative cooling
the lowering of a substances temperature.
50
what happen to the particles of the liquid and a substance boils
the particles absorb energy and begin to move faster and further apart
51
what is call the dynamo equilibrium
when the rate of condensation and the rate of evaporation is equal
52
what is fractional distillation
the product of separation by their differing boiling point
53
why is water boiling at 100C
there is a special intermolecular force of attraction called hydrogen-bonding in the water
54
what is present at the boiling point
both liquid and gas
55
what causes a greater boiling point
a greater intermolecular forces.
56
what is the unit of measure for pressure
KPA(kilopascal) or Milibar(meteorological)
57
how is pressure define
force per unit area
58
what is 1 atmosphere equal to in mmhm and KPA
760 mmhm and 101.325 KPA
59
what is the pressure created b the vapour at equilibrium known as
vapour pressure
60
when does boiling occurs
when atmospheric pressure and vapour pressure are equal
61
what is interpolation
technique that allows us to predict values of the independent and dependant variables.

Chemistry 30s (5 decks)

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