Using Limestone

Question 1

What is limestone mainly made up of?

Answer 1

CALCIUM CARBONATE

Question 2

Where does limestone come from?

Answer 2

IT IS QUARRIED OUT OF THE GROUND

Question 3

What is the equation for calcium carbonate?

Answer 3

CaCO3

Question 4

When limestone is heated, it’s thermally decomposed to make what?

Answer 4

CALCIUM OXIDE AND CARBON DIOXIDE

Question 5

What is thermal decomposition?

Answer 5

WHEN ONE SUBSTANCE CHEMICALLY CHANGES INTO AT LEAST TWO NEW SUBSTANCES WHEN HEATED

Question 6

Calcium oxide reacts with water to produce what?

Answer 6

CALCIUM HYDROXIDE

Question 7

Calcium hydroxide can be used to neutralise what?

Answer 7

ACIDIC SOIL IN FIELDS

Question 8

Powdered limestone is heated in a kiln with powdered clay to make what?

Answer 8

CEMENT

Question 9

Cement can be mixed with what two things to make mortar?

Answer 9

SAND AND WATER

Question 10

You can mix cement with what two things to make concrete?

Answer 10

SAND AND AGGREGATE

Question 11

What are the cons of quarrying limestone?

Answer 11

RUINS LANDSCAPE
MAKE LOTS OF NOISE AND DUST IN QUIET, SCENIC AREAS
DESTROYS HABITATS OF ANIMALS AND BIRDS
POLLUTION
UNSIGHTLY TIPS

Question 12

How can making stuff from limestone cause pollution?

Answer 12

CEMENT FACTORIES MAKE A LOT OF DUST, CAN CAUSE BREATHING PROBLEMS
ENERGY NEEDED TO PRODUCE CEMENT AND QUICKLIME. THE ENERGY IS LIKELY TO COME FROM BURNING FOSSIL FUELS

Question 13

What is limestone often formed from?

Answer 13

SEA SHELLS

Question 14

How is limestone used in power station chimneys?

Answer 14

TO NEUTRALISE SULFUR DIOXIDE

Question 15

What are the pros of limestone compared to granite or marble?

Answer 15

WIDELY AVAILABLE
CHEAPER
MORE HARD WEARING THAN MARBLE

Question 16

Is limestone fire resistant?

Answer 16

YES

Question 17

Does concrete corrode?

Answer 17

NO

Question 18

Does concrete have a high or low tensile strength?

Answer 18

FAIRLY LOW