AIR AROUND US

3. When inhaled, diaphragm _______ and move downward.
5. Carbon dioxide does not affect moist red litmus paper because it is not _______.
6. Oxygen inhaled will dissolve at the surface of the _______ alveolus.
7. _________ is a process that occurs when a substance reacts with oxygen chemically, releasing energy and light.
8. Oxygen does _______ combustion.
12. Combustion only takes place in the presence of air (oxygen),______ and heat.
13. The glowing splinter ___________ when placed in test tube containing oxygen.
16. Oxygen will be absorbed into the blood capillaries through the thin ________ wall.
17. The lime water becomes _______ when places in test tube containing carbon dioxide.
19. The burning splinter ________ when places in test tube containing carbon dioxide.
20. Combustion of fuels produces energy which can be used to generate ______ energy at a power station.

1. Mechanism by which our body get in the oxygen.
2. Oxygen is _________ in sodium hydroxide.
4. _________ is the process that the body uses to release energy from breakdown of nutrients.
5. The layer of air that surrounds the Earth’s surface is called the _______.
8. Oxygen and carbon dioxide are slightly _______ in water.
9. When exhaled, diaphragm ________ and move upward.
10. Mechanism by which our body get rid of carbon dioxide.
11. The more ________ the air, the more the water vapour is in the air.
14. Carbon dioxide produced by respiration is absorbed by green plants to conduct ______.
15. ________ is the mechanical process of inhaling and exhaling.
16. Carbon dioxide is _________ as they affects moist blue litmus paper.
18. With carbon dioxide, the hydrogen carbonate indicator change colour from red to _______.