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Chemistry L4-U4 > Maria Rules > Flashcards

Maria Rules Flashcards

0
Q

What is an element?

A

An element is only made up of one atom and cannot be split apart into any simpler substance by any chemical means.

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1
Q

What are the metals in the reactivity series? Most to least reactive.

A 
Potassium 
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Tin
Lead
Hydrogen
Copper
Silver
Gold
Platinum
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2
Q

What is a compound?

A

A combination of two or more elements and contains more than one type of atom and can be split apart by chemical means.

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3
Q

Why are the noble gasses useful?

A

Because they don’t react to anything.

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4
Q

Top three metals in the earths crust:

A

Oxygen
Silicon
Aluminium

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5
Q

Two top elements in the earths atmosphere:

A

Nitrogen

Oxygen

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6
Q

Too element in the universe:

A

Hydrogen

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7
Q

Top three elements in your body:

A

Oxygen
Carbon
Hydrogen

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8
Q

Three most expensive metals listed:

A

Gold
Silver
Nickel

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9
Q

What do lithium sodium and potassium all have I common when they react with water

A

They fizz, float and move about

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10
Q

What does rubidium do when it reacts with water?

A

Bigger flame than potassium and small explosion at the end

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11
Q

What does Caesium do when it reacts with water?

A

Big flame. EXPLOSION.

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12
Q

Why shouldn’t we say we have calcium in our bodies?

A

Because we don’t have it in our body, we only have compounds containing it.

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13
Q

What are the threes properties that are the same for all noble gasses?

A

They are all colourless
They don’t react with oxygen
Don’t react with hydrochloride acid.

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14
Q

How do noble gas boiling points change as you go down the group?

A

The boiling points get higher.

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15
Q

Two facts about helium:

A

Takes lots of energy to extract.

Helium particles are small and light.

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16
Q

Does copper conduct?
What does it look like?
Is it an alkali or a transition metal?

A

Yes
Pinkies brown and shiny
Transition

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17
Q

Does lithium conduct electricity?
What does it look like?
Is it an alkali or a transition metal?

A

Yes
Shiny when freshly cut and tarnishes in air
Alkali

18
Q

Does gold conduct electricity?
What does it look like?
Is it an alkali or a transition metal?

A

Yes
Shiny
Transition metal

19
Q

Does potassium conduct electricity?
What does it look like?
Is it an alkali or a transition metal?

A

Yes
Shiny when freshly cut, tarnishes quickly.
Alkali

20
Q

Does rhodium conduct electricity?
What does it look like?
Is it an alkali or a transition metal?

A

Yes
Silver coloured and shiny
Transition

21
Q

Does sodium conduct electricity?
What does it look like?
Is it an alkali or aTransition metal?

A

Yes
Shiny when cut and tarnishes quickly
Alkali metals

22
Q

What property have the halogens got in common?

A

They all smell of swimming pool

23
Q

Give one way the halogens are different from the noble gasses

A

They are not all gasses and aren’t colourless.

24
Q

How do you extract chlorine from rock salt?

A

You crush the rock salt up and put it in a beacon of warm water and stir until it has dissolved. Filter the solution into a separate beaker and place two electrodes to wires by crocodile clips . Pass an electric current through the electrodes and into the solution. The electrode that fizzes is where the chlorine is released.

25
Q

Give the names of six non metals found in the human body.

A 
Hydrogen
Carbon
Oxygen
Sulphur
Nitrogen
Phosphorus.
26
Q

Name two forms of carbon

A

Diamond and graphite.

27
Q

How do you test with hydrogen?

A

Pops with a lighted splint.

28
Q

How do you test for oxygen?

A

Relighted glowing splint.

29
Q

How do you test for carbon dioxide?

A

Turns limewater milky.

30
Q

Which property of metals tells you platinum is a metal?

A

It conducts electricity well.

31
Q

Is a compound joined chemically or is it mixed?

A

Joined chemically.

32
Q

Why do we use nitrogen instead of oxygen in crisp packets?

A

Because it doesn’t react.

33
Q

Give three sources of carbon dioxide in the atmosphere caused by human activity:

A
  • Burning fuel
  • Deforestation
  • Factories producing electricity
34
Q

Why is it important to have a carbon monoxide detector in your home?

A

I case you have a gas leak.

35
Q

What does prefix poly mean?

A

Several

36
Q

What does prefix mono mean?

A

One

37
Q

What is a molecule?

A

2 or more atoms strongly attached.

38
Q

Properties of solids:

A

Particles touch each other

Particles are arranged in a regular pattern

39
Q

Properties of metals:

A

Metals conduct electricity and heat

Solid at room temperature apart from mercury.

40
Q

Uses of copper:

A

Wiring, machinery, Statue of Liberty, heating and cooling systems, telecommunications links, coins.

41
Q

Uses for sodium chloride:

A

Seasoning, preservation, medicinal disinfection.

42
Q

How does the structure of copper help explain that copper conducts heat?

A

Atoms vibrate when heated and the vibrations pass along the structure conducting heat through metal.

43
Q

How does the structure of copper help explain that copper conducts electricity?

A

Electrons move around the structure and can conduct electricity.

Chemistry L4-U4 (1 decks)

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