Chapter 8 Flashcards

(30 cards)

1
Q

plasma

A

gas like mixture of positively and negatively charged particles

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2
Q

boyles law

A

law of which states that if the volume of a container of gas is decreased, the pressure of the gas will increase provided the temperature does not change

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3
Q

Archimedes principle

A

buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object

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4
Q

heat of vaporization

A

the amount of energy needed to change a material from a liquid to a gas

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5
Q

evaporation

A

changing of a liquid to a gas gradually at temperatures below the boiling point

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6
Q

crystals

A

repeating geometric arrangement of the particles

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7
Q

states of matter

A

solid liquid gas and plasma

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8
Q

pascal

A

SI unit of pressure

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9
Q

Bernoulli’s Principle

A

pressure exerted by a fluid decreases as the velocity of the fluid increases

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10
Q

liquid

A

water at 25° Celsius

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11
Q

thermal expansion

A

matter expanding as it gets hotter and contracting when cool

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12
Q

pascals principle

A

pressure applied to a fluid is transmitted unchanged throughout the fluid

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13
Q

pressure

A

amount of force exerted per unit of area

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14
Q

heat of fusion

A

amount of energy it takes to change a solid to a liquid

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15
Q

kinetic theory of matter

A

idea that matter is made up of tiny particles that are in constant motion

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16
Q

buoyant force

A

determines whether an object sinks or floats

17
Q

condensation

A

changing of a gas to a liquid

18
Q

solid

A

physical state of ice

19
Q

Charles’s law

A

the volume of a gas increases with increasing temperature providing the pressure does not change

20
Q

Boyle’s Law

A

if the volume of a container of gas is decreased, the pressure on the gas will increase if the temperature does not change

21
Q

Bernoulli’s principle

A

as the velocity of a fluid increases, the pressure exerted by the fluid decreases

22
Q

pascal’s principle

A

pressure applied to a fluid is transmitted unchanged throughout the fluid

23
Q

kinetic theory of matter

A

all matter is made of small particles that are in motion

24
Q

charles’s law

A

the volume of a gas increases with increasing temperature provided the pressure does not change

25
Archimedes principle
the buoyant force on an object in a fluid is equal to the weight of the fluid the object displaces
26
three ways you use fresh water
drinking, bathing, flushing toilet
27
three substances polluting fresh water supplies
fertilizers, feces, oil, trash
28
what can you do to reduce water pollution
create less waste, lower fresh water use
29
how are scientists dealing with water pollution
disposing of industrial and farming by products, laws determining release of and levels of various materials in water supplies
30
polluted
water that contains high levels of unwanted materials that makes it unacceptable for drinking