Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
what is limestone made from? |
calcium carbonate |
|
|
how do you get imestone out of the ground |
by quarrying it |
|
|
what is limestone use for |
it is used as a building material, also cosmetics and the chemical industry, cement made by heating limestone with clay in a kiln, mortor made y mixing cemet and sand with water,concrete made by mixing crushed rocks or stones caled aggregrate. |
|
|
wht is thermal decomposition |
breaking down a chemical using heat |
|
|
write the word and symbol equations for the thermal decomosition of calcium carbonate. |
calcium carbonate---> calcium oxide+ carbon dioxide CaCO3---> CaO + CO2 |
|
|
what happens to magnesium carbonate,copper carbonate, zinc carbonate, when they are heated? |
they undergo thermal decomposition |
|
|
write word equations to show what happens when calcium oxide reacts with water. What can the product be used for? |
CaO + H2O ----> Ca(OH)2 calcium oxide + water ----> Calcium hydroxide calcium hydroxide is used to neutralise acid soils. |
|
|
what can you use to test for carbon dioxide? what would a posotive test be? |
limewater can be used to test for carbon dioxide it is a posotive if it goes cloudy |
|
|
what happens to limestone statues when exposed to acid rain |
the limestoe starts to dissolve |
|
|
complete the following |
a) limestone + heat + heat = Cement b) cement + sand = mortor c) cement + sand + aggregrate = concrete |
|
|
list the advantages of quarrying |
more money for the community, can be used for to improve roads, provides jobs and after there is no limestone left can be filledin to be used as a fihing hole. |
|
|
list the disadvantages of quarrying |
noisey and dusty, destroys habitats, contributes to global warming adding emmisions to the atmosphere and causes the roads near the quarry to become busier which is bad for the community. |
