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Periodic Table revision Flashcards | StudBud

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What name is given to this group of elements?

A reaction where an element reacts with oxygen is called:

Periodic Table revision

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Y9

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Questions 10

Answers

1
A reaction where an element reacts with oxygen is called:
Rusting
Combustion
Deflagration
Oxidation
2
What name is given to this group of elements?
Transition metals
Halogens
Alkali metals
Noble gases
3
How did Dobereiner arrange the elements into triads?
According to their chemical properties
In order of atomic mass
In order of atomic number
According to their physical properties
4
What is made when potassium is exposed to air?
Potassium oxygenate
Potassium hydroxide
Potassium chloride
Potassium oxide
5
Why are Group 1 elements more reactive going DOWN the group?
Electron further from nucleus, less attraction, easy to gain
Electron nearer to nucleus, less attraction, easier to lose
Electron further from nucleus, less attraction, easy to lose
Electron nearer to nucleus, less attraction, easier to gain
6
What makes argon unreactive?
It needs to gain 8 electrons for a full outer shell
It has a full outer shell of electrons
All of its electrons 'argon'
It needs to lose 8 electrons for a full outer shell
7
What is seen when potassium reacts with water?
Gentle fizzing, no flame and the metal disappears at the end
There is fizzing and the metal turns into a ball
The mother of all explosions
Fizzing, the metal moves on water and burns with lilac flame
8
Promethium reacts in a similar way to sodium. When it reacts with water it makes...
Promethium oxide + hydrogen
Promethium hydroxide
Promethium hydroxide + hydrogen
Promethium oxide
9
Which of these elements is in Period 1?
Lithium
Hydrogen
Oxygen
Magnesium
10
Why is hydrogen no longer used in airships (blimps)?
It is too reactive
Mr Ward thought it would be a bad idea
It is too hard to produce
Its density is too low