Elements, Compounds And Mixtures Flashcards

0
Q

Draw a diagram of an atom of an element.

A

Check book for answers

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1
Q

What is an element?

A

An element is a material that cannot be split into anything simpler by chemical methods. They contain only one type of atom.

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2
Q

Draw a diagram of a molecule of an element.

A

Check book for answers

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3
Q

What is an atom?

A

An atom is the simplest particle of an element that can exist on it’s own

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4
Q

What is a molecule?

A

A molecule has 2 or more atoms joined together

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5
Q

What is the symbol for hydrogen?

A

H

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6
Q

What is the symbol for lithium?

A

Li

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7
Q

What is the symbol for sodium?

A

Na

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8
Q

What is the symbol for potassium?

A

K

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9
Q

What is the symbol for magnesium?

A

Mg

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10
Q

What is the symbol for calcium?

A

Ca

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11
Q

What is the symbol for barium?

A

Ba

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12
Q

What is the symbol for aluminium?

A

Al

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13
Q

What is the symbol for iron?

A

Fe

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14
Q

What is the symbol for silver?

A

Ag

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15
Q

What is the symbol for carbon?

A

C

16
Q

What is the symbol for silicon?

A

Si

17
Q

What is the symbol for lead?

A

Pb

18
Q

What is the symbol for nitrogen?

A

N

19
Q

What is the symbol for phosphorus?

A

P

20
Q

What is the symbol for oxygen?

A

O

21
Q

What is the symbol for sulphur?

A

S

22
Q

What is the symbol for chlorine?

A

Cl

23
Q

What is the symbol for bromine?

A

Br

24
Q

What is the symbol for iodine?

A

I

25
Q

Metallic elements are.

A

Good conductors of electricity
Good conductors of heat
Shiny solids
Usually have high melting and boiling points
Usually malleable and ductile
All are solids at room temperature (except mercury)

26
Q

Non-metallic elements are

A

Non-metallic solids tend to be soft and brittle (diamonds are an exception)
Poor conductors of heat
Can be a gas, solid or liquid at room temperature
Usually dull (diamonds are an exception)
Poor conductors of electricity (graphite is an exception)
Usually have low melting and boiling points

27
Q

What is a compound?

A

A material that is made up of two or more different elements that are chemically joined together

28
Q

Draw the diagram of a compound.

A

Check book for answer

29
Q

What is a mixture?

A

Two or more substances mixed together which are easy to separate

30
Q

Draw the diagram for mixtures.

A

Check book for answer