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Science > Metals and new materials > Flashcards

Metals and new materials Flashcards

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1
Q

Property

A

Can be measured and is quoted with a unit

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2
Q

Physical property

A

Can be observed without the identity of the substance. Colour, density, hardness malting point, ductility…

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3
Q

Chemical property

A

The ability if a substance to undergo a specific chemical change. Flamability, reactivity, PH, solubility…

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4
Q

Gases in the air

A 
Nitrogen- 78%
Oxygen- 20.9%
Argon gases- 0.9%
Carbon dioxide- 0.003%
Other gases- 0.17%
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5
Q

Which gas reacts with MOST metals

A

Oxygen

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6
Q

Test for oxygen

A

Glowing splint relights

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7
Q

Test for hydrogen

A

Lit splint goes out with a squeacky pop

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8
Q

Test for Carbon Dioxide

A

Lime water turns milky/ cloudy

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9
Q

Oxygen molecule is formed…

A

by two atoms

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10
Q

Metal + oxygen —>

A

Metal oxide

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11
Q

Rust is

A

Iron oxide

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12
Q

How does rust compares with iron

A

It has poorer chemical properties

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13
Q

Best conditions for rust to form

A

Water and oxygen

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14
Q

Metal + water —>

A

Metal hydroxide + hydrogen

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15
Q

Metal + acid —>

A

Salt + hydrogen

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16
Q

Metal oxide + acid —>

A

Salt + water

17
Q

Metal carbonate + acid

A

Salt + Carbon dioxide + water

18
Q

Salt

A

A compound formed from neutralisation

19
Q

Laboratory acids

A

Nitric acid- HNO₃
Sulphuric acid- H₂SO₄
Hydrochloric acid- HCl

20
Q

What affects the reaction of metal with an acid ?

A

Amount of acid
Temperature
Concentration of acid

21
Q

Displacement reaction is a…

A

Reaction in which a more reactive element desplaces a less reactive element from its compound

22
Q

Law of conservation of mass

A

Mass cant’t be created or destroyed

23
Q

Combustion reaction

A

Fuel (Hydrocarbon) + oxygen —> Carbon dioxide + water + (light and heat)

24
Q

Examples of Hydrocarbon

A

Methane, Ethane, Propane, Butane…

25
Q

Metal properties

A

Magnetic, good conductor, shiny, dense, ductile

26
Q

What is the reactivity series?

A

A lists that orders elements from most to least reactive

27
Q

A chemical reaction has taken place when…

A

Bubbling/ fizz, change in colour, heat is given off

28
Q

How is carbon used to displace metals

A

Carbon is added to a compound and heated up in a blast furnace. It then displaces the compound.

29
Q

The reactivity series is:

A 
Potassium 
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon 
Zinc 
Iron 
Hydrogen
Copper
Silver
Gold

Science (8 decks)

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