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Integrated Science Final Review > Physical And Chemical Changes > Flashcards

Physical And Chemical Changes Flashcards

0
Q

Chemical change? Ex?

A

When a new substance is formed. Ex: burning paper

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1
Q

What is a physical change? Example?

A

When some of the properties of a material change, but substances stay the same. Ex: cutting paper

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2
Q

What type of matter consists of 2 or more substances that are NOT chemically combined?

A

Mixtures

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3
Q

Substances that CANNOT be broken down into more simple substances are called ____

A

Elements

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4
Q

The force of gravity on another object is called ___

A

Weight

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5
Q

Quantity of matter in an object____

A

Mass

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6
Q

SI unit for mass?? __

A

Kilograms

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7
Q

Measurement of how much mass is contained in a given volume is called ___

A

Density

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8
Q

Density =

A

Mass/Volume

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9
Q

Smallest particle of an element __

A

Atom

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10
Q

•definite shape
•definite volume
•particles packed tight
Are properties of a ___

A

Solid

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11
Q
  • no def. shape
  • def. volume
  • particles are free to move around in given space
A

Liquid

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12
Q

Resistance to a liquid flowing:

A

Viscosity

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13
Q
  • no def. shape
  • no def. volume
  • particles are free
A

Gas

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14
Q

Amount of space that a gas takes up:

A

Volume

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15
Q

Result of force distributed over an area ___

A

Pressure

16
Q

According to Boyles law, when the pressure of a gas increases at constant temp., it’s volume ____

A

Volume decreases

17
Q

What happens to pressure when the speed of gas particles increase?

A

Pressure increases

18
Q

When the temp. of a gas decreases at a constant volume, it’s pressure____

A

Pressure decreases

19
Q

Volume of a gas is directly proportional to it’s temp. In kelvins if the pressure and # of particles of the gas are constant is___

A

Charles Law

20
Q

Temp at which a substance melts

A

Melting

21
Q

Solid>gas is __

A

Sublimation

22
Q

Liquid > gas

A

Vaporization

23
Q

Gas> liquid

A

Condensation

24
Q

Total potential and kinetic energy of all the microscopy particles in an object is ___

A

Thermal energy

25
Q

Thermal energy alway flows from a __ object to a ___ object

A

Hot; cold

26
Q

Which state of matter would have the least amount of thermal energy?

A

Solid

27
Q

Ice melts as a result of energy flowing from where?

A

Warm air surrounding the ice

28
Q

If a gas is in an expandable container is heater, the volume of the container would___

A

Increases

Integrated Science Final Review (2 decks)

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