Science~carbon dioxide

Question 1

How do you prepare carbon dioxide in the laboratory?

Answer 1

Dilute hydrochloric acid is dropped onto the calcium carbonate (marble chips) ➡️ fizzing ➡️ dense carbon dioxide pushes/displaces the air out of the jar.

Question 2

Chemical formula for hydrochloric acid?

Answer 2

HCl

Question 3

Whats the chemical name for marble?

Answer 3

Calcium carbonate

Question 4

The word equation for the reaction of preparation of CO2 is :

Answer 4

Calcium carbonate + hydrochloric acid (dilute) ↪️ calcium chloride + water + carbon dioxide

Question 5

Does CO2 support combustion?

Answer 5

No

Question 6

CO2 is a ____, ______ ,______ gas

Answer 6

Colourless,odourless, tasteless

Question 7

What is the characteristic test for the presence of carbon dioxide

Answer 7

It turns limewater milky. It turns milky cuz chalk is formed

Question 8

What is the chalk formed called?

Answer 8

Calcium carbonate

Question 9

Word equation to test for carbon dioxide

Answer 9

Limewater (calcium hydroxide) + carbon dioxide ➡️ chalk+water

Question 10

Carbon dioxide is _____ than air

Answer 10

Denser

Question 11

What solution is formed when carbon dioxide dissolves in water

Answer 11

An acidic solution ( carbonic acid)

Question 12

3 things carbon dioxides used for

Answer 12

• fire extinguishers
• fizzy drinks
• fridge

Question 13

How is carbon dioxide produced? (More expensive way)

Answer 13

When carbon is burned in oxygen gas