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school (2021 semester) > physical science ch. 2, 3, and 4 > Flashcards

physical science ch. 2, 3, and 4 Flashcards

1
Q

all matter is in _____ motion

A

constat

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2
Q

what are the four states of matter?

A

liquid, gas, solid plasma

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3
Q

What are the characteristics of a liquid?

A

Indefinite shape, Definite Volume, Fluid, Can not be Compressed

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4
Q

What are the characteristics of a solid?

A

Definite Shape, Definite Volume, Rigid, Can not be Compressed

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5
Q

What are the characteristics of a gas?

A

Indefinite shape, Indefinite Volume, Fluid, Compressible

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6
Q

What are the two factors that can change the volume of a gas?

A

Temperature and pressure

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7
Q

Endothermic change

A

requires energy, absorbs energy, energy “enters” the system

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8
Q

Exothermic change

A

removes energy, energy “exits” the system

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9
Q

which phase changes are endothermic (absorb energy) (move faster) ?

A

Melting, Sublimation, and Boiling/Evaporation are endothermic

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10
Q

which phase changes are exothermic (release energy) (move slower) ?

A

Freezing, Condensation, and Deposition

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11
Q

What happens to the boiling point of a substance when you go up to the mountains and why?

A

As the altitude increases, the boiling point decreases. This is because the pressurization decreases the higher you go so that makes it so the water also decreases.

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12
Q

Matter

A

anything that has mass and takes up space

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13
Q

Pure Substance

A

composed of one type of particle

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14
Q

Element

A

made up of only one type of atom

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15
Q

Compound

A

two or more different elements chemically combined

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16
Q

Mixture

A

two or more different elements chemically combined

17
Q

Heterogeneous

A

two or more substances evenly mixed together

18
Q

Homogeneous Solution

A

two or more substances unevenly mixed

19
Q

What are the three categories of elements on the Periodic Table?

A

Metals, nonmetals, metalloids

20
Q

What kind of change is needed to break down a mixture?

A

physical

21
Q

What kind of change is needed to break down a compound?

A

chemical

22
Q

Solute is the substance that is being _____

A

dissolved

23
Q

Solvent is the substance that the solute is _______ in

A

dissolved

24
Q

What are three ways to dissolve a solid faster in a liquid?

A

Crush
Stir
Heat

25
Q

Solubility

A

the ability of a substance to dissolve in a solvent

school (2021 semester) (5 decks)

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