EASY
Upper Secondary: IGCSE
IMPORTANT
Earn 100

Write a balanced equation for each reaction zinc metal, zinc oxide (ZnO) ,and zinc carbonate (ZnCO3) with dilute sulphuric acid.

Important Questions on Some Non-Metals and their Compounds

EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 1
What is the carbon cycle?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 2
Compare respiration and the combustion of methane. What is similar about the two reactions?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 2
What do we use the energy from respiration for?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 2
What do we use the energy from burning fuels for?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 3
Now compare respiration and photosynthesis. What do you notice about these reactions?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 4
See if you can draw a circular flowchart that shows: how carbon dioxide from the air gets locked up as compounds in petroleum and natural gas.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 4
How carbon dioxide is released again, millions of years later.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 16 - Some Non-Metals and their Compounds>Q>Q 5
One part of the carbon cycle does not occur naturally (that is, without help from humans). Which part?