What are the elements in Group 0 called?
The noble gases.
AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher · 5.1.2.4
Revise AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher specification point 5.1.2.4, Group 0, with free active-recall flashcards. Flip through the set or review every question and answer below.
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What are the elements in Group 0 called?
The noble gases.
How many outer-shell electrons do most noble gases have, and how does helium differ?
Most have eight; helium has two, filling its first shell.
Why are noble gases very unreactive?
Their full outer shells are stable, so their atoms do not tend to gain, lose or share electrons.
Why are noble gases usually found as individual atoms rather than molecules?
Their atoms are already stable individually, so they do not easily form molecules.
How do the boiling points and relative atomic masses of noble gases change down Group 0?
Both increase down the group.
What is boiling point?
The temperature at which a liquid changes to a gas.
What is a property trend in a group of elements?
How a property changes across the elements in the group.
How can a property trend be used to predict the property of another group member?
Use the trend’s direction and pattern to estimate a value between or beyond known values.
How certain are predictions beyond known property values compared with predictions between them?
Predictions beyond known values are less certain.
When can a property trend be assumed to be linear?
Only when there is supporting data.