EduNinjaThe following formulae represent different substances.
A
Ag
Cu
Answer the following questions using only these substances.
Each substance may be used once, more than once or not at all.
State which substance is:
a cause of acid rain
a gas which contributes to climate change.
This question is about gases.
The following substances are gases at room temperature.
Identify, by letter:
a gas which combines with water to form acid rain [1]
two gases which are found in clean dry air [2]
Air is a mixture. Nitrogen and oxygen are the two most common gases in air.
State the percentage of oxygen, to the nearest whole number, in clean dry air.
For each of the following, give the name of an element from Period 2 (lithium to neon), which matches the description.
Elements may be used once, more than once or not at all.
an element which forms an oxide that is a reactant in photosynthesis
an element that is a product of photosynthesis
an element that makes up approximately 78\% by volume of the air
Some symbol equations and word equations, A to J, are shown.
A
B
C ethane + chlorine → chloroethane + hydrogen chloride
D
E ethene + steam → ethanol
F chlorine + aqueous potassium iodide → iodine + aqueous potassium chloride
G
H ethanoic acid + ethanol → ethyl ethanoate + water
I calcium carbonate → calcium oxide + carbon dioxide
J
Use the equations to answer the questions that follow.
Each equation may be used once, more than once, or not at all.
Give the letter, A to J, for the equation that represents:
photosynthesis [1]
The symbols of the elements of Period 3 of the Periodic Table are shown.
Answer the following questions about these elements.
Each element may be used once, more than once or not at all.
Write the symbol of an element which:
forms an oxide which leads to acid rain
A list of substances is shown.
> ammonia bauxite carbon dioxide carbon monoxide ethanol hematite oxygen sodium chloride sulfur dioxide
Answer the questions using the list of substances.
Each substance may be used once, more than once or not at all.
State which substance is:
a gas that causes acid rain ..... [1]
a toxic product of the incomplete combustion of hydrocarbons ..... [1]
A list of substances is shown.
Answer the questions using the list of substances.
Each substance may be used once, more than once or not at all.
State which of the substances:
is a reactant in photosynthesis
is a greenhouse gas
is a gas that is approximately 78% of clean, dry air
A list of substances is shown.
Answer the questions using the substances in the list.
Each substance may be used once, more than once or not at all.
State which substance is:
a colourless toxic gas
a gas that is approximately 21% of clean, dry air.
The names of the elements of Period 2 of the Periodic Table are shown.
lithium beryllium boron carbon nitrogen oxygen fluorine neon Answer the following questions about these elements. Each element may be used once, more than once or not at all.
Identify the element which:
is a product of photosynthesis
has an oxide found in clean, dry air
has an oxide responsible for acid rain.
This question is about gases found in clean, dry air and gases found in polluted air.
Name one gas found in clean, dry air which contributes to global warming.
State the percentage of nitrogen in clean, dry air.
Name the substance used to remove sulfur dioxide in flue gas desulfurisation.
Nitrogen dioxide, , is formed in car engines.
Name the equipment in a car exhaust used to remove the formed in car engines.
State one adverse effect of carbon monoxide on human health.
Carbon dioxide, , is a reactant in photosynthesis.
Name the two products of photosynthesis. and