WorksheetsFuel and Atmosphere Do Now 11PHT
Total questions: 10
Worksheet time: 5mins
The products of complete combustion are
(a) Carbon dioxide and water
(b) Oxygen and water
(c) Only carbon dioxide
(d) Only oxygen
Which 2 gases are most common in Earth's atmosphere?
Carbon Dioxide (C02) & Nitrogen (N2)
Oxygen (O2) & Carbon Dioxide (CO2)
Water Vapor (H2O) & Oxygen (O2)
Nitrogen (N2) and Oxygen (O2)
How do scientist think that early atmosphere was probably formed?
Gases from volcanoes
Lava from volcanoes
Gases released from bacteria
They are unsure how it is formed
Modern day atmosphere has approximately what percentage of the air is Oxygen ?
1%
21%
78%
52%
What evidence do scientists have that large quantities of oxygen entered the atmosphere?
comets
fossils
the rings in trees
banded-iron formations
Name the homologous series that makes up most of the molecules in crude oil
Alkenes
Alkynes
Alkanes
Alcohols
What is the general formula of an alkane
Cn H2n
Cn H2n+1
Cn H2n+2
Cn H2nOH
What is causing an increase in carbon dioxide levels in today's atmosphere?
Combustion
Deforestation
Oceans warming up
All of the above
Which gas is only formed due to the extreme temperatures found in car engines?
carbon monoxide
sulfur dioxide
nitrogen oxides
carbon dioxide
Which of the following can cause acid rain?
carbon monoxide
sulfur dioxide
nitrogen oxide
carbon dioxide
