Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry > Chem L > Flashcards

Chem L Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

What is the haber process?

A

The Haber process (named for Fritz Haber) is an industrial process used to form ammonia from hydrogen and nitrogen.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are the haber conditions

A

400 - 450 c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what are the reactants in the haber process?

A

nitrogen in the air. Hydrogen from natural gas (reacting methane with steam)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are NPK fertilisers?

A

nutrients are nitrogen, phosphorous and potassium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does enriching the soil mean?

A

by using animal manure, using natural deposits of minerals and adding synthetic fertililers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the life cycle assessment?

A

An evaluation of the environmental impact a product has over its lifetime.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what are the four stages in the LCA?

A
  1. extracting and processing raw materials
  2. manufacturing and packaging
  3. use and operation during its lifetime
  4. disposal at the end of its useful life, including transportation and distribution
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

why is recycling important?

A

recycling materials uses less energy. This means that we can also reduce the amount of waste and pollution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

how can waste water and sewage be treated?

A
  • Firstly, filtered to remove large particles and is left so that sediment drops to the bottom. The “sludge” at the bottom is then anaerobically digested (broken down by bacteria) to make methane gas. Any remaining effluent is broken down by aerobic respiration. The water is then released back into rivers and lakes.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what do you call water that is safe to drink?

A

potable water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

how do you do the potable water practical

A
  1. use universal indicator to test pH of the water
  2. measure and record the mass of an empty evaporating basin
  3. pour 10 cm3 water into the evaporating basin and evaporate the water using a bunsen burner until most of the water has evaporated.
  4. once evaporating basin is cool reweigh and record the change in mass
  5. calculate the mass of dissolved solids
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is phytomining?

A

it uses plants to absorb metal compounds. the plants are harvested and burned to get ash which contains a metal.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is bioleaching?

A

uses bacteria to produce leachate solutions that contain metal compounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is corrosion?

A

it is the destruction of materials by chemical reactions with substances in the environment. Ex: rusting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

how do you prevent corrosion?

A
  • applying a coat that acts as a barrier
    Ex: painting or electroplating
How well did you know this?
1
Not at all
2
3
4
5
Perfectly

Chemistry (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions