Fechar
Name the 3 sub atomic particles
2. Which 2 are in the nucleus?
3. Which 2 are charged?
4. Where are the electrons?
5. What number on the periodic table tells you the number of protons?
6. What sum do you do to find the number of neutrons in an atom?
7. What is the symbol of limestone and what is it made of?
8. Formula when limestone thermally decomposes?
9. Formula when limestone reacts with sulphuric acid?
10. Formula when calcium oxide reacts with water?
11. What happens when calcium hydroxide reacts with C02?
12. What can limestone be used to make?
13. Disadvantage of quarrying?
14. Disadvantages of making stuff from limestone
15. Uses and plus sides of limestones
Advantages of limestone
What non metal element is used to displace a metal?
Must the metal be more or less reactive than carbon?
What is an ore?
How do we extract metals which are more reactive than carbon?
What are the 4 ions present when sodium chloride is electrolysed?
Why does H+ go to the electrode instead of Na+?
Why are alloys stronger than pure metals?
What is meant by native state?
What is produced when iron oxide is displaced in the blast furnace?
Why are metals extracted my electrolysis so expensive?
As copper-rich ores are running out, we need to extract from low grade ores. Give two ways we do this?
Give two reasons we should recycle metals
What is wrong with iron from the blast furnace?
What is an alloy?
Why are most metals alloys?
What are the metals between groups 2 and 3 in the periodic table called?
Why are aluminium and titanium so useful
What does phytomining use to extract metals?
What are the stages of phytomining
What are the stages of bio-leaching?
What is produced when carbonates react with acid?
What is smelting?
Why is more copper being extracted from ores with low percentage of copper compounds?
Why is the overall charge of an atom neutral?
Why are some elements in the same group?
Why are noble gases in Group 0 unreactive?
Why is scrap iron used to displace copper?
Feature of low carbon steel?
Feature of high carbon steel?
Feature of stainless steel
