Chapter 1 Matter Flashcards

1
Q

What are the properties of a solid

A

They have fixed shape

They have fixed volume

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2
Q

What are the properties of liquid

A

They have no fixed shape

They have a fixed volume

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3
Q

What are the properties of gases

A

They have no fixed shape

They have no fixed volume

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4
Q

Why do gases have no fixed shape

A

They particles are far apart and have no forces of attraction

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5
Q

Why are solid have a fixed shape

A

Because they are closely parked and only vibrate

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6
Q

What happens when liquids are heated

A

They move faster and attractive forces become weaker and turns gaseous state

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7
Q

Explain the movement of solid and liquids

A

The liquid close pass each other

The solids vibrate in a fixed position

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8
Q

How are gases molecule arranged

A

They molecules are far apart

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9
Q

What happens when liquid is cooled

A

Liquid contract and solidify when cooled

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10
Q

What happens when solids are cooled

A

They contract and state stays the same

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11
Q

What happen when gases are cooled

A

Gases condenses to liquid when cooled

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12
Q

What team is used when solids changes to gases

A

Its called sublimation

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13
Q

What happens when a pure substance is heated

A

The temperature of a melting solid becomes constant.

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14
Q

State whether melting is a physical or chemical change

A

Its a physical change because no new substances are formed

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15
Q

Whats the basic unit present in oxygen gas

A

Oxygen atoms

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16
Q

What basic units in a solid sodium chloride

A

Sodium and chloride atoms

17
Q

What basic units found in molten aluminum oxide

A

Aluminum and oxygen atoms

18
Q

What is diffusion

A

Is a process by which move from a region of high concentration to a region of lower concentration until until particles are evenly distributed

19
Q

In what phase do diffusion occur

A

In gas and liquid state only

20
Q

State any two factors affect the rate if diffusion

A

Temperature

Particle size

21
Q

Why do wet cloths dry faster in warm days than cold

A

Because wet cloths gain more kinetic energy from high Tempreture resulting high evaporation and dry faster

22
Q

Solids lose it shape when melts why

A

The particles vibrate and gain heat thus there is week forces and the particles slide each other losing shape

23
Q

Salt dissolves faster in hot water than cold why

A

They move faster in hot water thus the particles collide with water molecules and dissolve faster

24
Q

When sugar is added to water when dissolves taste sweet

A

Because the sugar particles diffuse through out making it sweet