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KS3 Science SJF > C2.1 The Periodic Table > Flashcards

C2.1 The Periodic Table Flashcards

1
Q

What are the properties of metals?

A

-Conduct heat -Conduct electricity -Malleable (can be hammered into shape) -Lustrous (shiny) -Sonorous (make a ringing noise when hit) -High density

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2
Q

What are the properties of non-metals?

A

-Insulators of heat -Insulators of electricity -Brittle (break easily) -Dull -Low density

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3
Q

What is group 1 also known as?

A

The alkali metals

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4
Q

What is group 7 also known as?

A

The halogens

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5
Q

What is a displacement reaction?

A

When a more reactive element takes the place of a less reactive element

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6
Q

How does sodium react with water?

A

-Fizzes -Indicator changes from green to purple -Disappears -Floats -Moves on top of the water

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7
Q

Write a word equation for the reaction of sodium with oxygen

A

Sodium + Oxygen –> Sodium Oxide

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8
Q

Write a word equation for the reaction of sodium with water

A

Sodium + Water –> Sodium hydroxide + Hydrogen

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9
Q

Write a symbol equation for the reaction of sodium with oxygen

A

4Na(s) + O2(g) –> 2Na2O(s)

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10
Q

Write a symbol equation for the reaction of sodium with water

A

2Na(s) + 2H2O(l) –> 2NaOH(aq) + H2(g)

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11
Q

Why doesn’t bromine react with potassium chloride?

A

Because chlorine is more reactive than bromine so bromine can’t displace chlorine

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12
Q

Write a word equation for the reaction of iron with chlorine

A

Iron + Chlorine –> Iron Chloride

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13
Q

Describe the trend in reactivity in group 1

A

Group 1 get more reactive as you go down the group

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14
Q

Describe the trend in reactivity in group 7

A

The halogens get less reactive as you go down the group

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15
Q

Finish the following word equation

Potassium Bromine + Chlorine –>

A

Potassium Brominde + Chlorine –> Potassium Chloride + Bromine

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16
Q

Explain why universal indicator goes purple when sodium reacts with water

A

As sodium hydroxide is made which is an alkali

17
Q

Describe the test for hydrogen

A

Set fire to it.

It makes a squeaky pop.

18
Q

Finish the following symbol equation

2KI(aq) + Cl2(aq) –>

A

2KI(aq) + Cl2(aq) –> 2KCl(aq) + I2(aq)

KS3 Science SJF (4 decks)

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