GCSE1 Atmosphere Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
What produced gases in the early atmosphere? | Volcanoes |
Name 4 gases in early atmosphere | Methane, Carbon Dioxide, Ammonia, Water vapour; there definitively was NO OXYGEN!!! |
How do scientist know the composition of the early atmosphere? | they analysed the bubbles of gas trapped in ancient air |
What is the source of gases in early atmosphere? | Volcanoes |
What was the main gas is early atmosphere? | Carbon Dioxide |
What gas was "missing" in early atmosphere? | Oxygen |
What is the formula of Carbon Dioxide | CO2 (ensure that the symbols for Carbon, for Oxygen are in CAPITAL letters) (the numbers should be in subscript!!!) |
What is the formula of Methane | CH4 (ensure that the symbols for Carbon, and Hydrogen are in CAPITAL letters) (the numbers should be in subscript!!!) |
What is the formula of Ammonia | NH3 (ensure that the symbols for Nitrogen and Hydrogen are CAPITAL letters) (the numbers should be in subscript!!!) |
What is the formula of Oxygen gas | O2 |
What is the formula of Nitrogen | N2 (ensure that the symbols for Nitrogen is in CAPITAL letters) (the numbers should be in subscript!!!) |
What is the formula for Water? | H2O (ensure that the symbols for Carbon and for Oxygen are CAPITAL letters) (the number should be in subscript!!!) |
What is the formula for Carbon Dioxide? | CO2 (ensure that the symbols for Carbon and for Oxygen are CAPITAL letters) (the number should be in subscript!!!) |
What is the formula for Glucose? | C6H12O6 (ensure that the symbols for Carbon, Hydrogen and for Oxygen are CAPITAL letters) (the numbers should be in subscript!!!) |
How many oxygen atoms in a molecule of Glucose C6H12O6? | 6, simply look at the number after the symbol for oxygen |
What is the total number of atoms in a molecule of Glucose C6H12O6? | 6+12+6=24, simply look at the number after the symbol for oxygen |
How much Nitrogen is there in the atmosphere today? | 78% |
How much Oxygen is there in the atmosphere today? | 21% |
What is the third most abundant gasin today’s atmosphere? How much is there? | Argon, 1% |
CHALLENGE: Name a source of evidence that Oxygen started to appear about 2 billion years ago | No more Iron Sulfide was formed; but Iron Oxide formed instead. |
How were the oceans formed? | Condensation of water vapour |
Why did the levels of Carbon Dioxide go down? | CO2 dissolved in oceans; animals used it for making their shells |
Where is most the CO2 now? | Trapped in Carbonate rocks |
How does Carbon Dioxide become Calcium Carbonate? | • dissolves in oceans • used to form skeletons / shells of marine organisms/sea snails •these formed sediments when the organisms died |
State 3 reasons why levels of Carbon Dioxide went down millions of years ago. | 1) dissolves in oceans 2)used to form skeletons / shells of marine organisms/sea snails 3)plants started photosynthesis |
Explain why levels of Oxygen went up when plants appeared? | Plants started photosynthesis; photosynthesis releases oxygen |
Write the word equation for photosynthesis reaction | Carbon Dioxide + Water Glucose + Oxygen |
Write the balanced equation for Photosynthesis | 6 CO2 + 6 H2O C6H12O6 + 6O2 |
Describe how crude oil is formed | 1) planktons die 2) covered in mud 3) rots WITHOUT OXYGEN (anerobic) 4) get compressed and heated 5) over millions of years |
Describe how coal is formed | 1) plants die 2) covered in mud 3) rots WITHOUT OXYGEN (anerobic) 4) get compressed and heated 5) over millions of years |
Write the word equation to show the reaction of Methane with Oxygen that took place millions of years ago | Methane + Oxygen Carbon Dioxide + Water (did you say Methane Oxide ooops; better learn this one!!!) |
Write the word equation to show the reaction of Ammonia with Oxygen that took place millions of years ago | Ammonia + Oxygen nitrogen + Water (did you say Ammonia Oxide ooops; better learn this one!!!) |
Write the balanced equation for the reaction of Methane with Oxygen that took place millions of years ago | CH4 + 2 O2 CO2 + 2 H2O (always start by writing the word equation! Then formulae! Then balance) |
Write the balanced equation for the reaction of Ammonia with Oxygen that took place millions of years ago | 4 NH3 + 3 O2 2N2 + 6 H2O (always start by writing the word equation! Then formulae! Then balance) |
Name one natural source of CO2 today | Volcanoes |
Name one human activity that produces CO2 | Combustion of fossil fuels |
Name one human activity that produces Methane | Farming |
Name one human activity that is reducing the amount of CO2 reabsorbed by plants | Deforestation |
What produced gases in the early atmosphere? | Volcanoes |
How does Carbon Dioxide become Calcium Carbonate? | • dissolves in oceans • used to form skeletons / shells of marine organisms/sea snails •these formed sediments when the organisms died |
State 3 reasons why levels of Carbon Dioxide went down millions of years ago. | • dissolves in oceans • used to form skeletons / shells of marine organisms/sea snails plants started photosynthesis |
Explain why levels of OXygen went up when plants appeared? | Plants started photosynthesis; photosynthesis releases oxygen |
How do we know what the atmosphere was like millions of years ago? | 1) Scientists study the gases coming out of volcanoes and 2) they can identify gases in the atmosphere of planets that are at the beginning of their "life". |
Created by:
ursulinechem2
Popular Chemistry sets