Gas Chemistry Flashcards
What will happen when carbon is burned in a plentiful supply of oxygen?
Gas given off
Glows bright orange
Heat given off
When copper is heated in oxygen what solid is formed?
Copper oxide
What colour change would you observe when copper is heated in oxygen?
Red-Brown to Black
How would you burn magnesium in air?
Use tongs
Hold Mg ribbon at the end
Put into blue flame of Bunsen
What safety precautions should you take when burning Mg in air?
Goggles
Keep at arms length
What would you observe when Mg is burned in air?
Bright white light
White ash produced
What are 2 physical properties of nitrogen gas?
Colourless
Odourless
What are some uses for nitrogen?
Coolant, food packaging, manufacture ammonia
What is the second most abundant gas in our atmosphere?(nitrogen is first)
Oxygen
Which is a atmospheric gas?
Argon. Hydrogen. Chlorine.
Argon
What are some physical properties of sulphur?
Odourless, solid yellow powder, brittle, insoluble in water
What colour is the flame when soulful burns in air?
Blue
What word describes the smell of sulfur gas?
Pungent
What proportion of the atmosphere is made up of nitrogen?
80%
What are 3 properties of nitrogen gas?
Very unreactive,colourless, no smell
What is the formula for nitrogen gas?
N2
What are 2 properties of hydrogen gas?
Less dense than air
Colourless
What happens if a lighted splint is placed in a test tube of hydrogen gas?
Squeaky pop
What type of element is Magnesium?
Metal
What type of element is Carbon?
Non metal
What type of element is Sulfur?
Non metal
What type of element is Iron?
Metal
What type of element is copper?
Metal
What type of reaction is magnesium?
Highly exothermic
Burns with bright white flame
What type of reaction is carbon?
Exothermic
Glows orange when heated strongly
What type of reaction is sulfur?
Burns slowly with blue flame
What type of reaction is Iron?
Burns with orange sparks
What type of reaction is Copper?
Glows red, occasionally with blue-green flame
What is the oxide for magnesium?
Magnesium oxide, MgO- solid white powder
What is the oxide for Carbon?
Carbon dioxide CO2 - colourless, odourless gas
What is the oxide for sulfur?
Sulfur dioxide, SO2 - colourless gas with choking smell
What is the oxide for Iron?
Triiron tetroxide, Fe3O4- Black solid powder
What nature is magnesium?
Basic
What nature is Carbon?
Acidic
What nature is sulfur?
Acidic
What nature is iron?
Basic
What nature is copper?
Basic
What to basic oxides react with?
Acids
What do acidic oxides react with?
Alkalis