Environmental Chemistry Flashcards

1
Q

Sulphur trioxide + water –> ?

A

Sulphur trioxide + water –> sulphuric acid

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2
Q

Nitrogen dioxide + water –> ? + ?

A

Nitrogen dioxide + water –> nitric acid + nitrous acid

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3
Q

Carbon dioxide + water –> ?

A

Carbon dioxide + water –> carbonic acid

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4
Q

When plants dissolve into water what is created?

A

Plants dissolve into water to create an acidic substance

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5
Q

When gasses dissolve in water vapour what is created?

A

When gasses dissolve in water vapour and can create acids in clouds

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6
Q

When sulphur dioxide dissolves into water vapour what acid is made?

A

Sulfur out acid

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7
Q

When sulphur trioxide dissolves into water vapour what acid is made?

A

Sulphuric acid

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8
Q

When nitrogen dioxide dissolves into water vapour what two acids are made?

A

Nitric acid + nitrous acid

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9
Q

When carbon dioxide dissolves into water vapour what acid is made?

A

Carbonic acid

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10
Q

Where does sulphur dioxide come from?

A

Burning fossil fuels

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11
Q

Where does sulphur trioxide come from?

A

Burning fossil fuels

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12
Q

Where does nitrogen dioxide come from?

A

Care engines

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13
Q

Where does carbon dioxide come from?

A

Respiration

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14
Q

Sulphur dioxide + water –> ?

A

Sulphur dioxide + water –> sulphurous acid

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15
Q

Name four effects of acid rain

A

Corrosion, can slowly cause deterioration of houses
Dead fish, can effect fisherman and life cycle
Dead plants, look ugly and can effect the ecosystem
Acidic water, can be harmful to the wildlife and people
Failed crops, can be harmful to the economy
Harmful to animals, can effect the life cycle

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16
Q

What is corrosion?

A

When something is corroded it is dissolving

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17
Q

What is erosion?

A

When something is eroded it is being broken into smaller bits

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18
Q

Calcium Carbonate + Sulphuric Acid –> ? + ? + ?

A

Calcium Carbonate + Sulphuric Acid –> Carbon Dioxide + Water + Calcium Sulphate

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19
Q

How can we treat acidic soils and water reserves?

A

We can treat acidic soils and water reserves by neutralising them using alkalis such as limestone

20
Q

PH {put in all caps simply for testing purposes} should be spelt with what in CAPS?

A

It should be spelt pH even at the beginning of a sentence

21
Q

Name four ways to test pH

A

Litmus paper
Universal indicator
Red cabbage indicator
pH probe

22
Q

What happens to co2 in the atmosphere? {in relation to sedimentary rocks}

A

The co2 in the atmosphere gradually becomes locked up in sedimentary rocks as carbonate and fossil fuels

23
Q

In what two ways can carbon dioxide be removed from the atmosphere?

A

Photosynthesis by plants

Dissolved by the oceans into rivers

24
Q

How do plants effect carbon dioxide in the atmosphere?

A

When plants go through the process of photosynthesis, they are lowering the levels of carbon dioxide because the plants are absorbing the carbon dioxide when they photosynthesise

25
What is Thermal Decomposition?
A reactant that involves using heat to break down a compound
26
How many products does one reactant make?
One reactant makes two products
27
What is an Exothermic reactant?
An Exothermic reactant is a reaction that gives heat out
28
What is an Endothermic reactant?
An Endothermic is a reactant that takes heat in
29
Metal carbonate --> ? + ?
Metal carbonate --> metal oxide + carbon dioxide
30
Is respiration an endothermic or Exothermic reaction?
Exothermic
31
Is carbon dioxide an endothermic or Exothermic reaction?
Endothermic
32
What are most fuels made from?
Most fuels are made from carbon and hydrogen
33
What are fuels made from carbon and hydrogen called?
Fuels made from carbon and hydrogen are called hydrocarbons
34
Why is carbon monoxide lethal to humans?
Carbon monoxide chemically joins for he blood cells so they can't attach to oxygen cells, they deprive you of oxygen which makes you fall sleep, and then you slowly run out of oxygen and die
35
What is incomplete combustion?
Incomplete combustion is when there is not enough oxygen for a fuel to burn completely, forming carbon monoxide
36
What is complete combustion?
Complete combustion is where the entire fuel is burnt and nothing is left
37
Name four properties of a good fuel
``` Something that doesn't release a lot of gas Long burning time Cheap Renewable fuel No pollution Easily available Easy to store Releases lots of energy ```
38
What is the conservation of mass?
Conservation of mass means everything you put into an equation must come out balanced
39
What is a catalyst?
A catalyst will increase the rate of a reaction but the catalyst will remain unchanged
40
Give an example of a biological catalyst?
Enzymes are biological catalysts
41
What reaction does enzymes help speed up and where in our bodies are they found?
Enzymes help speed up digestion amongst many other relations and are found in the liver
42
What is a hydrocarbon?
An hydrocarbon is a compound of hydrogen and carbon
43
What is conservation of mass?
When the reactants are the same as the product
44
What is the symbol formula for three common acids?
HCI H2SO4 HNO3
45
State 5 properties of metals
``` Shiny Reflective Malleable Non porous Hard ```