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Chemistry > Elements, compounds and mixtures > Flashcards

Elements, compounds and mixtures Flashcards

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1
Q

What is a molecule?

A

It has 2 or more atoms joined together

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2
Q

Symbol for potassium

A

K

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3
Q

Symbol for iron

A

Fe

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4
Q

Symbol for silver

A

Ag

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5
Q

Symbol for lead

A

Pb

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6
Q

4 properties of metals

A

Luster, malleable, electrical conductor and ductile

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7
Q

Non metals are:

A

Brittle and dull

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8
Q

Iron + sulfur=

A

Iron sulfide

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9
Q

Tin + oxygen =

A

Tin oxide

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10
Q

Lithium + nitrogen =

A

Lithium nitride

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11
Q

Calcium + carbon + oxygen =

A

Calcium carbonate

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12
Q

Nickel + sulfur + oxygen =

A

Nickel sulfate

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13
Q

Appearance of iron:

A

Grey, shiny solid

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14
Q

Appearance of sulfur:

A

Yellow, dull powder

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15
Q

Properties of Iron =

A

Luster, malleable, magnetic, electrical conductor, heat conductor

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16
Q

Properties of Sulphur =

A

Non-magnetic, non-malleable, soft, poor conductor of heat and electricity

17
Q

What smell does iron sulfide give off?

A

Rotten eggs smell

18
Q

Description of an element

A

It contains only 1 atom. It cannot be simplified by chemical methods

19
Q

Description of a compound

A

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

20
Q

Description of a mixture

A

Two or more substances mixed together which are easy to separate

21
Q

What is an atom?

A

The simplest part of an element that can exist on its own

22
Q

Do non-metals conduct electricity?

A

No

23
Q

Are metals usually shiny?

A

Yes

24
Q

Do non-metals have a high or low density?

A

Low

25
Q

Do metals have a high or low melting point?

A

High

26
Q

Symbol for aluminium

A

Al

27
Q

Symbol for calcium

A

C

28
Q

Symbol for phosphorus

A

P

29
Q

Appearance of copper:

A

Orange/brown, shiny, metal, bendy

30
Q

Appearance of bromine:

A

Brown/dull

31
Q

Appearance of magnesium:

A

Light grey, shiny, bendy

Chemistry (7 decks)

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