Rocks And Building Materials

Question 0

Disadvantages of building materials: limestone, cement and mortar

Answer 0

Limestone cement mortar slowly react with carbon dioxide in THE rain water☔️☔️☔️☔️☔️ causing it to wear away also acid

Question 1

Advantages of various building materials: concrete, mortar, cement

Answer 1

Concrete:
It is strong when compact together so it can resist forces that crush of squash
Mortar: holds brick /stone together strongly.!!!

Question 2

Write (say) a word equation to show what happens when calcium carbonate is broken down by heat (MAKING CEMEnT)????????

Answer 2

Calcium carbonate ➡️calcium oxide + carbon dioxide

CaCO3➡️CaO+ CO2

Question 3

How do you get lime stone out of the ground. ?___?

Answer 3

Dig it out of the ground in quarrrrries

Question 4

What is limestone made of ?

Answer 4

️Calcium carbonate

I’m bored

Question 5

What is thermal decomposition?

Answer 5

Breaking down a chemical by heating it

Question 6

Ŵhat happeñs tö magnesium carbonate, čôpper carbonate, zinç carbonate ŵhen they are heated?

Answer 6

They decompose on heating to form a metal oxide & čarbon dioxide

Question 7

Write a word for what happens when calcium oxide reacts with water?

Answer 7

Calcium oxide + water ➡️️Calcium hydroxide.

CaO + H2O ➡️Ca(OH)2

Question 8

How do you test for CO2?

Answer 8

Use limewater if it goes cloudy CO2 is present

Question 9

What are the products produced when a carbonate reacts with an acid?

Answer 9

Salt
water
co2

Question 10

What happens to Limestone when exposed to rain?

Answer 10

Limestone is made of calcium carbonate
This reacts with acid
Start to decay I.e. Facial details of states