Carbon Dioxide (2)

Question 1

You can collect gases in a test tube full of air. This works because the gas you’re collecting _______________ the air in the tube

Answer 1

Displaces

Question 2

The delivery tube is fed directly into a test tube either upwards or downwards. When is which used

Answer 2

Upward delivery is used to collect gases that are ‘lighter than air’.
Downward delivery is used to collect gases that are ‘heavier than air’.

Question 3

________ acid reacts with _________ ___________ to produce CO2

Answer 3

Dilute

Calcium carbonate

Question 4

Calcium carbonate (marble chips) is put in the bottom of a flask and dilute hydrochloric acid is added. The HCl reacts with the calcium carbonate to produce _________ _________, ________ and carbon dioxide gas

Answer 4

Calcium chloride

Water

Question 5

2 ways to produce Carbon dioxide

Answer 5

Dilute HCl reacts with Calcium carbonate

Thermal decomposition of Metal carbonates

Question 6

One way of making Co₂ is by heating a metal carbonate. This is an example of thermal _________________.
Copper(2) carbonate is a green powder that will easily decompose to form __________ ___________ and copper oxide when you heat it

Answer 6

Decomposition

Carbon dioxide

Question 7

Equation for the thermal decomposition of metal carbonates

Answer 7

Metal carbonate –> Metal Oxide + Co₂

CuCO₃ —> CuO + Co₂

Question 8

Co₂ is used in carbonated drinks to make them ________

Answer 8

Fizz
__________________________________________
⁰ ¹ ² ³ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁺ ⁻ ⁼ ⁽ ⁾ ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ₊ ₋ ₌

Question 9

CO₂ is ____________ in water

Answer 9

Soluble

Question 10

CO₂ + H₂O —>

Answer 10

H₂CO₃ (Aq)

Carbonic acid

Question 11

Co₂ is ________ dense than air so it can sink onto the flames and stop the oxygen that the fire needs.

Answer 11

More

Question 12

Where is CO₂ used

Answer 12

Drinks and fire extinguishers

Question 13

Increasing CO₂ is linked to __________ change

Answer 13

Climate change