Seneca - Noble Gases Flashcards
What are uses of noble gases ?
Noble gases can be used in light bulbs because they will NOT react with the hot metal filament.
Because noble gases are unreactive, they exist as single atoms (monatomic) instead of forming molecules.
The noble gases have low boiling points.
The noble gases (in group 0) have low densities, making them useful in baloons.
How does boiling point of noble gases change as you go down the group
But their boiling points do increase as you move down the periodic table. This is because the relative atomic mass increases lower down the periodic table.
How does density of noble gases change down the group ?
Their densities do increase as you move down the periodic table because of their increasing relative atomic mass.
What Happens when a halogen halide reacts with water - what solution created.
The hydrogen halides dissolve in water to form acidic solutions, such as hydrofluoric acid, hydrobromic acids and hydroiodic acid.
Hydrogen chloride dissolves in water to form hydrochloric acid.
The solutions produce H+ions, which make them acidic.
Metal halides state at room temp
Metal halides are ionic compounds that are solid at room temperature.
What is reduced during a redox reaction?
More reactive = reduced
The atoms of the more reactive halogen displace the less reactive one and each gain an electron.
They are reduced.
What is oxidised in a redox reaction ?
Less reactive = oxidised
The ions of the less reactive halogen are displaced by the more reactive halogen.They each lose an electron and are oxidised.
