Year 9 AP1 Flashcards
What is cement made out of?
Limestone heated with clay
What is another name and the symbol for limestone?
Calcium carbonate
CaCO3
What is concrete made out of?
Cement, sand, water and crushed rocks
What is mortar made out of?
Cement, sand and water
Why is limestone important?
Building
What’s the test for CO2?
If limewater goes cloudy
What’s an isotope?
Two versions of the same atom that have a different mass number
What is the reaction called where a solid is formed? (E.g. Limewater to limestone (calcium hydroxide(aq) to calcium carbonate)
Precipitation reaction
How does a kiln work?
It turns while it heats so it’s heated easily calcium carbonate is put in and once it’s heated it makes calcium oxide and carbon dioxide
What are some economic advantages/disadvantages of a quarry/cement works?
Advantages- more jobs, more business to small local businesses, important worldwide product so lots of money to be made
Disadvantages- less tourists
What are some social advantages/disadvantages of a quarry/cement works?
Advantages- easier to travel due to improved roads, more jobs, more business to small local businesses
Disadvantages- more traffic due to trucks and people getting to work, dust and noise pollution (dust can cause chest problems and noise is disturbing), less tourism
What are some environmental advantages/disadvantages of a quarry/cement works?
Advantages- (less CO2)
Disadvantages- destroys habitats, more traffic, dust can destroy crops, destroys area of natural beauty, releases CO2 and cements particles
What is the reaction called where a solid is formed? (E.g. Limewater to limestone (calcium hydroxide(aq) to calcium carbonate)
Precipitation reaction
What is it called when a substance is broken down by heat into 2 or more different substances?
Thermal decomposition
What is an ionic compound?
It happens between a metal and a non-metal
