Back to marketplace

Gases in the Atmosphere

No description yet. This curated deck is ready for daily study.

Total cards: 9•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (9)

#1
Front (Question)

What are the 4 abundant gases in dry air and their percentages?

Back (Answer)

nitrogen 78% oxygen 21% argon 0.93% carbon dioxide 0.04%

#2
Front (Question)

What happens when a substance burns?

Back (Answer)

combustion the substance reacts with oxygen to form an oxide (oxidation) can be acidic, neutral or alkaline

#3
Front (Question)

Describe the combustion of magnesium

Back (Answer)

burns with white flame, forms white powder (MgO), alkaline when dissolved in water 2Mg (s) + O2 (g) -> 2MgO (s)

#4
Front (Question)

Describe the combustion of hydrogen

Back (Answer)

burns easily with pale blue flame, forms water vapour, neutral pH 2H2 (g) + O2 (g) -> 2H2O (g)

#5
Front (Question)

Describe the combustion of sulfur

Back (Answer)

burns with pale blue flame, produces sulfur dioxide, acidic when dissolved in water S (s) + O2 (g) -> SO2 (g)

#6
Front (Question)

What is thermal decomposition?

Back (Answer)

the process of breaking something down/decomposing something using heat

#7
Front (Question)

What does the thermal decomposition of metal carbonates produce?

Back (Answer)

carbon dioxide

#8
Front (Question)

Describe the thermal decomposition reaction of copper (ii) carbonate

Back (Answer)

CuCO2 (s) -> (heat) CuO (s) + CO2 (g) copper (ii) carbonate is a green powder copper (ii) oxide is a black powder carbon dioxide is a colourless gas

#9
Front (Question)

What is carbon dioxide?

Back (Answer)

a greenhouse gas that has increasing amounts in the atmosphere, which may contribute to climate change.