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Chemistry > State of Matter > Flashcards

State of Matter Flashcards

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1
Q

Substances are made up of tiny particles called

A

Atoms

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2
Q

Particles move in ______ motion

A

random motion

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3
Q

Particles mix by colliding each other and bouncing off all directions is called

A

Diffusion

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4
Q

Solid have ______ shape and _______ volume

A

fixed,fixed

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5
Q

Liquids shape and volume

A

Fixed volume
Takes the shape of the container

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6
Q

Gases shape and volume

A

Ni fixed shape
No fixed volume
Takes the shape and volume of its container

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7
Q

Compressibility of solid,liquid and gases

A

Solid-slightly compressible
Liquid-slightly compressible
Gases-highly compressible

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8
Q

Phase change

A

Solid——>Liquid-Melting
Liquid———>Gases-Evaporation
Solid———>Gases-Sublimation

All of the above 3 are endothermic reaction,and heat is absorbed

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9
Q

Phase Change

A

Liquid——>Solid-Freezing
Gases——->Liquid-Condensation
Gases ———>Solid-Deposition

All of the above are exothermic reaction and heat is released during reaction

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10
Q

How much heat is required for phase change?

A

The stronger the forces between molecules,more heat energy is required to break them

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11
Q

Gas pressure depends on

A

1.Temperature
2.Volume

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12
Q

Gas pressure and Temperature relation

A

As the temperature increases,the pressure of the gases also increases

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13
Q

Gas pressure and volume relation

A

As the volume of the container decreases,the gas pressure increases

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14
Q

Rate of diffusion of gas depends on

A

1.Mass of the particle or relative molecular mass
2.Temperature

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15
Q

Diffusion of gas and relative molecular mass

A

The lower its relative molecular mass,the faster a gas will diffuse

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16
Q

Temperature and rate of diffusion of gases

A

The higher the temperature,the faster a gas will diffuse

17
Q

Mass of a molecule is called

A

Relative molecular mass

18
Q

What are the three states of matter?

A

Solid- rigid, definite shape

Liquid- flows and takes up the shape of the container, definite volume

Gas- takes up the volume and shape of the container

19
Q

What is fourth type of matter ?

A

Plasma- found naturally in interiors of the stars, gaseous materials which have electrically charged particles, which classify themselves from gaseous matter.

20
Q

Why can some sample of matter appear to have mixed properties of solid, liquid, and or gases at the same time?

A

Bcuz they are composed of many small pieces. Eg clouds seem to be gases but actually they are composed of gases and tiny particles of water (liquid or solid)

21
Q

What are homogenous and heterogenous mixture?

A

Homogenous mixture- uniform composition and visually the same throughout

Heterogenous- not uniform composition, composition that varied from point to point.

22
Q

What are pure substances and mixture?

A

Pure substances- element and compounds

Mixture- composition of two or more different matter and can be separated by physical changes

23
Q

What type of element constitutes nearly one half of the earth?

A

Oxygen.

24
Q

What types of matter are called fluids?

A

Liquids and gases bcuz they can flow from place to place

25
Q

Is the density of solid always greater than liquid?

A

No. Example- solid water is less dense than liquid water

26
Q

What is sublimation and is it exothermic or endothermic?

A

Solid———>gas It is endothermic

27
Q

What is condensation? Exo or endo

A

Gas to liquid. It is exothermic.

28
Q

How do we change gas to plasma and what is the process called?

A

By heating or putting a lot of energy.

The atoms that make up the gas start to lose their electrons and become positively charged ions. The lost electrons are then able to float freely. This process is called ionization.

29
Q

How are plasma changed back to gases?

A

By a process known as recombination

process by which positive ions of a plasma capture a free (energetic) electron and combine with electrons or negative ions to form new neutral atoms (gas).

30
Q

What are extensive and intensive properties?

A

Extensive property- property that depends on the amount of matter

Intensive- property that does not depend on amount of matter

31
Q

What are extensive and intensive properties?

A

Extensive property- property that depends on the amount of matter

Intensive- property that does not depend on amount of matter

32
Q

Is concentration extensive or intensive?

A

Intensive

33
Q

extensive or intensive?

  1. Length
  2. Mass
  3. Solubility
  4. Temp
  5. Heat
  6. Conc
  7. BPT/MTP
A
  1. E
  2. E
  3. I
  4. I
  5. E
  6. I
  7. I
34
Q

Homogenous or heterogenous?

Blood
Vinegar
Gasoline
Bronze
Metals

A

Heterogenous
Homo
Homo
Homo
Homo

Chemistry (13 decks)

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