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Science > Materials > Flashcards

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, melting point, ductility…

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3
Q

Chemical property

A

The ability of 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- 0.03%
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

Oxygen molecule

A

Formed by two atoms

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8
Q

Metal + Oxygen —>

A

Metal oxide

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9
Q

Rust is

A

Iron Oxide

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10
Q

How does rust compare with iron

A

It has poorer chemical properties

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11
Q

Best conditions for rust to form

A

Water and Oxygen

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12
Q

Metal + Water —>

A

Metal hydroxide + hydrogen

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13
Q

Metal + Acid —>

A

Salt + Hydrogen

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14
Q

Metal oxide + acid —>

A

Salt + Water

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15
Q

Metal carbonate + acid

A

Salt + Carbon dioxide + water

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16
Q

Salt

A

A compound formed from neutralisation

17
Q

Laboratory acids

A

Nitric Acid- HNO3
Sulphuric Acid- H₂SO₄
Hydrochloric Acid- HCl

18
Q

Test for hydrogen

A

Lit splint goes out with a pop

19
Q

Test for carbon dioxide

A

Lime water turns milky cloudy

20
Q

What affects the reaction of metal with an acid

A

Amount of acid
Temperature
Concentration of acid

21
Q

Displacement Reaction

A

A reaction in which a more reactive element desplaces a less reactive element from it’s compound

22
Q

Law of conservation of mass

A

Mass can’t be created or destroyed

23
Q

Combustion Reaction

A

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

24
Q

Metal Properties

A

Magnetic, good conductor, shiny, dense, ductile

25
Q

What is the reactivity series

A

A list that orders elements from most to least reactive

26
Q

A chemical reaction has taken place when..

A

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

27
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

Science (38 decks)

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