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End of yr exams - yr 10 > Science - 4 part 2 > Flashcards

Science - 4 part 2 Flashcards

1
Q

List the properties of metals:

A

sonorous, ductility, malleability, lustre, conductivity

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2
Q

What is sonorous?

A

Metals make a sound when hit

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3
Q

What is ductility?

A

Metals can be stretched into thin wires

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3
Q

What is lustre?

A

Metals are shiny when freshly cut

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3
Q

What is malleability?

A

metals can be bent or hammered into a new shape

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4
Q

What is conductivity?

A

Metals are good heat and electrical conductors

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5
Q

How can metals be arranged?

A

In a reactivity series

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6
Q

Put metals into the reactivity series:

A

potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, nickel, tin, copper, silver, and gold

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7
Q

Relate reactivity to corrosion

A

The higher a metal is on the series, the more reactive it is

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8
Q

What is the only metal that rusts and its equation:

A

Iron
Iron + oxygen = iron oxide (rust)

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9
Q

How are organic compounds based?

A

Carbon based

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10
Q

Define hydrocarbon

A

A molecule made completely of only carbon and hydrogen atoms

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11
Q

What first 4 alkanes

A

Methane, ethane, propane, butane

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12
Q

What are plastics

A

Plastics are polymers

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13
Q

What is the difference between thermosetting plastics and thermoplastics?

A

Thermosetting aren’t affected by heat and are harder to recycle, thermoplastics go soft and mouldable when heated but are easily recycled.

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14
Q

List common plastics (monomer and polymer ) and their uses

A

Styrene-Polystyrene-Packaging
Carbonate-Polycarbonate-Plastic lenses

15
Q

Describe the uses of plastics and problems with plastics

A

Does not biodegrade
Hard to recycle
Can become microplastics and get in many things

16
Q

What is an alloy?

A

Combination of a metal with at least one other metal useful because they have combined properties e.g stainless steal

17
Q

what are 3 basic equations?

A
  1. metal + oxygen = metal oxide
  2. metal + base = metal salt + hydrogen gas
  3. acid + base = salt + water
18
Q

What is the symbol for nitric acid?

A

HNO3

19
Q

What is the symbol for hydrochloric acid?

A

HCL

20
Q

what is the symbol for sulfuric acid?

A

H2SO4

21
Q

What happens when metal reacts with water

A

Metals that react with water are the most reactive
These metals are stored in oil to prevent reactions with atmospheric water
These metals also react with acids
Metal + Water → Metal hydroxide + hydrogen gas

22
Q

What happens when metal reacts with oxygen

A

Rusting is a type of oxidation
Rusting is a relatively slow reaction
Other metals react much faster with oxygen such as Mg
Metal + Oxygen → Metal oxide

23
Q

What happens when metal reacts with acid

A

Metal + Acid → Metal salt + Hydrogen gas
Metals salt names are similar to neutralisation reactions
Eg. Magnesium + Sulfuric acid → Magnesium sulphate
+ hydrogen gas

End of yr exams - yr 10 (16 decks)

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