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Science > The Atomic Nature Of Matter > Flashcards

The Atomic Nature Of Matter Flashcards

1
Q

What is matter

A

Anything that takes up space

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2
Q

Molecule

A

A group of atoms joined together

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3
Q

Particle

A

Things that make up matter

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4
Q

A physical change

A

When atoms form in a new way to give us a mixture but do not create a new substance
(Eg. Ice melting)

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5
Q

What is a mixture

A

When Two or more different substances are physically combined

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6
Q

Name the three states of matter

A

Gas
Solid
Liquid

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7
Q

What is evaporation?

A

Evaporation is the change of state from liquid to a gas

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8
Q

Name the characteristics of solids

A

Have a definite shape
Have a definite volume
Cannot be easily compressed
Cannot flow

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9
Q

Name the characteristics of liquid

A

Have no definite shape
Have a definite volume
Are not easily compressed
Are able to flow

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10
Q

Name the characteristics of gas

A

Have no definite shape
Have no definite volume
Can be easily impressed
Can flow

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11
Q

What is the chemical change?

A

When atoms arrange in a different way to give us a new substance called a compound

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12
Q

What are signs of a chemical change in a reaction

A

A change in colour
A change in temperature

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13
Q

What is melting?

A

Melting is the change of state from a solid to liquid by adding heat

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14
Q

What is an atom?

A

The smallest particle of matter

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15
Q

What are elements?

A

A substance made up of only one type of atom

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16
Q

The change of state can happen when…..

A

Heat energy absorbs
Heat energy is released

17
Q

Solid to liquid

A

Melting

18
Q

Liquid to gas

A

Evaporation

19
Q

Gas to liquid

A

Condensation

20
Q

Liquid to solid

A

Freezing

21
Q

Solid to gas

A

Sublimation

22
Q

What is a compound

A

When two or more different elements combine together chemically, forming a new substance

23
Q

A compound is __________ to reverse

A

Difficult

24
Q

What is conservation of mass

A

When the total mass before a reaction must equal the total amount of mass after the reaction

25
Q

Name an example of a compound

A

Water - H2O
Salt - NaCl

26
Q

A mixture is _________ to reverse

A

Easy

27
Q

A mixture is a _______ reaction

A

Physical

28
Q

A compound is a ___________ reaction

A

Chemical

29
Q

Name a mixture

A

Salt in water
(Salty water)

30
Q

Name a compound

A

Magnesium oxide

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