Chemistry Flashcards
Which gas was present in the early earth atmosphere?
A) Ammonia
B) Nitrogen dioxide
C) O Zone
A) Ammonia
What do scientists think was responsible for much of the gases in the early earth atmosphere?
A) Burning Fossil Fuels
B) Volcanoes
C) Polytherm
B) Volcanoes
Which gas makes up nearly 80% of our current atmosphere?
A) Oxygen B) Carbon Dioxide C) Methane D) Nitrogen E) Ammonia
D) Ammonia
Granite is an example of which type of rock?
Igneous Rocks
Which type of rock is it most likely to be if it contains fossils?
Sedimentary Rocks
Which type of rock is formed from cooled magma?
Igneous Rocks
Chalk is an example of which type of rock?
Sedimentary Rocks
What is the process known as where a compound is broken down using heat?
Thermal Decomposition
Which carbonate would break down easiest?
Copper Carbonate
Which calcium compound is used to remove acidic gases from coal fired power stations?
Calcium arbonate
For the reaction copper + oxygen -> copper oxide, which is the correct balanced equation?
A) 2Cu + O2 -> 2CuO
B) Cu + O -> CuO
C) Cu + O2 -> CuO2
A) 2Cu + O2 -> 2CuO
What colour precipitate does copper form?
A) Green B) Red C) Orange D) Blue E) No Colour
D) Blue
Which electrode do the negative ions move to?
A) Positive
B) Negative
C) Neutral
D) Neither
A) Positive
What do we mean by a saturated hydrocarbon?
A) Contain double bonds
B) Contain only single bonds
C) Are very wet
B) Contain only single bonds
Which pH would show a strong acid?
A) 1 B) 11 C) 15 D) 7 E) 4
A) 1
