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7th grade science > States of Matter > Flashcards

States of Matter Flashcards

1
Q

Describe matter

A

anything that has mass and volume

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2
Q

What is matter made up of?

A

tiny particles called atoms and molecules

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3
Q

Describe Viscosity

A

is the liquids resistance to flow

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4
Q

Describe the States of matter

A

the physical forms in which a substance can exist

  • solid
  • liquid
  • gas
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5
Q

What determines the state of matter?

A

the way particles interact with each other helps determine the state of the matter

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6
Q

Describe surface tension

A

is a force that acts on the particles at the surface of a liquid

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7
Q

Describe gel

A

is a liquid that has tiny particles of a solid suspended in it. This type of substance is known as a colloid

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8
Q

Describe exothermic

A

energy is lost or removed during the change or state

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9
Q

Describe exothermic and Endothermic

A

Exothermic- energy is lost

Endothermic- energy is absorbed

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10
Q

What is a change of state

A

it is the change from one physical form to another

- all changes are physical changes

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11
Q

Describe Charle’s Law

A

If the temperature of a gas increases, the volume of the gas also increases by the same amount

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12
Q

Describe Boyle’s Law

A

As the pressure of a gas increases, the volume of the gas decreases by the same amount

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13
Q

Describe particles in a liquid

A

Move fast enough to overcome some of the attraction between particles
Are close together but can still slide past one another

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14
Q

Describe Liquid

A

a state of matter that has a definite volume but takes the shape of its container

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15
Q

Describe particles in a solid

A

Don’t move fast enough to overcome the strong attraction between them
Stay close together and vibrate in place

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16
Q

Describe Solid

A

is the state of matter that has a definite shape and definite volume

17
Q

Describe sublimation

A

is the process when matter changes form a solid directly to a gas state

18
Q

Describe Evaporation

A

is the change of state from the liquid state to the gas state

19
Q

Describe melting

A

is the change of state form solid to a liquid

20
Q

Describe Condensation

A

is the change of state from a gas to a liquid

21
Q

Describe freezing

A

is the change of state from a liquid to a solid

22
Q

Describe particles in a gas

A

move fast enough to overcome the attraction between them

particles are far apart and move independently of one another

23
Q

Describe gas

A

is a state of matter that has no definite shape or volume

24
Q

Describe SECFM

A 
S- Sublimation
E- Evaporation
C- Condensation
F- Freezing
M-Melting
25
Q

What are some factors that cause gases to behave?

A

Temperature
Volume
Pressure

26
Q

Describe volume

A

the amount of space an object takes up

27
Q

Describe mass

A

the amount of matter in an object

7th grade science (17 decks)

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