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Chemistry /GCSE Chemistry 11L1: 3.1 Periodic Table Part 1

GCSE Chemistry 11L1: 3.1 Periodic Table Part 1

Chemistry32 CardsCreated 17 days ago

This deck covers key concepts and questions related to the periodic table, focusing on the contributions of scientists, properties of groups, and reactivity trends.

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Who made the law of octaves?

Newlands.
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Key Terms

Term
Definition
Who made the law of octaves?
Newlands.
Who created a spiral to show the elements in order of atomic weight?
Chancourtois.
Who’s periodic table is most similar to the table we use now?
Mendeleev’s.
What are the group of elements in the middle of the periodic table called?
Transition metals.
In group 1 (the alkali metals) what is the most reactive element?
Francium.
What is the name of the elements in group 7 called?
The halogens.
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GCSE Chemistry 11L1: 3.1 Periodic Table Part 1
TermDefinition
Who made the law of octaves?
Newlands.
Who created a spiral to show the elements in order of atomic weight?
Chancourtois.
Who’s periodic table is most similar to the table we use now?
Mendeleev’s.
What are the group of elements in the middle of the periodic table called?
Transition metals.
In group 1 (the alkali metals) what is the most reactive element?
Francium.
What is the name of the elements in group 7 called?
The halogens.
In group 7, are the elements more reactive at the top or bottom of the column?
At the top.
As you go down group 1, what happens to the melting points of the metals?
It decreases.
Are alkali or transition metals used in a catalyst?
Transition metals.
Why was Mendeleev’s periodic table not accepted at first?
He had not discovered all the elements in the table and he swapped some elements around that other scientists did not agree with.
Which produce more colourful salts, transition or alkali metals?
Transition metals make colourful salts.
What is a halogen?
A halogen is an element from group 7.
What is a halide?
A compound including a halogen.
Do alkali metals have a high or low density?
They have a low density compared to transition metals.
Do group 1 metals have high or low boiling/melting points?
They have low boiling/melting points.
How many electrons do alkali metals have on their highest energy level?
They have one electron on their outer shell.
As you descend group 1 they react more quickly with air, true or false?
True, as you descend group 1 they react more quickly with air.
Why are the Metals in group 1 Called Alkali metals?
Because they all form hydroxides which dissolve in water to give strongly alkaline solutions.
Why Are alkali metals Stored in Oil?
To prevent them from reacting with the oxygen in the air.
Why wasn’t John Newlands' theory widely accepted?
Because he was forced to put elements in the same groups as other elements even if their properties weren’t similar. For example, he put iron in the same group as oxygen.
How did Mendeleev order his elements in his table?
By atomic mass.
What made Mendeleev's table so clever?
He knew where gaps were in the table and so predicted what properties the elements would have once they were discovered.
Why did Mendeleev’s table gain credit after his table was published?
Because the properties of newly found elements fit in with his predictions.
How did Mendeleev overcome the problems Newlands had faced?
He swapped elements around in some circumstances so that the properties were similar.
What happens as you go down the list of alkali metals?
They become more reactive.
Why are the noble gases unreactive?
Because they have a full outer shell.
How many groups are there in the periodic table?
18.
What happens as you go down the list of halogens?
They become less reactive.
What was John Newlands' theory called?
The law of octaves.
A more reactive halogen will do what to a less reactive halogen in a halide solution?
It will displace it.
Why do the elements get less reactive as we move down group 7?
Because there are more electron rings, which are therefore further away from the nucleus. As a result, there is a weaker attraction towards the nucleus and therefore harder to gain an electron - less reactive.
What type of reaction includes a non-metal and a metal?
Ionic bonding.