Brainscape's Knowledge GenomeTM

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


See full index

Chemistry > C6 – Chemistry Out There > Flashcards

C6 – Chemistry Out There Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
0
Q

What is ozone?

A

O3

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

What is biodiesel ?

A

When veg oil is used as an alternative to diesel

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

What can ultraviolet light cause?

A

Sunburn, skin cancer, Cataracs

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

What is the equation to make soap?

A

Fat + sodium hydroxide =soap + glycerol

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

What is galvanising

A

Where a coat of zinc is put on an object, it’s more reactive than I am so will lose its electrons instead of the iron

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

what is tinning?

A

Where a coat of tin is applied to an object

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

What is the equation of rust?

A

Iron + oxygen= hydrated iron oxide (rust)

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

How can rust be prevented

A

Galvanising, tinning, paint, grease, oil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How can limescale be removed

A

Using a weak acid

calcium carbonate+ hydrogen ions =. Calcium ions + water + carbon dioxide

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

Why was chlorofluorocarbon, (CFCs) used?

A

Nonflammable, non-reactive, low boiling points, non-toxic, insoluble in water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What what CFCs used as

A

Coolants in fridges, air-conditioning systems, propellants in aerosol cans.

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

What is used as an alternative to CFCs

A

Alkanes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Electrolysis of brine it gives hydrogen, chlorine and N a OH:

A

– Hydrogen gas is given off at (-ve) cathode.
- Chlorine gas given off at (+ve) anode
. – Sodium hydroxide and is left in solution

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

What is the chemical equation of how to make alcohols when reacted with steam?

A

Ethene + steam= ethanol

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

Why does temperature need to be controlled in making alcohols

A

If it’s too hot yeast will be destroyed if it’s too cold yeast will be inactive

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

What does fermentation do

A

Convert sugars into ethanol

16
Q

What is a fuel cell

A

An electrical cell supplied with fuel and oxygen and uses of energy from the reaction to generate electrical voltage

17
Q

What are fuel cells used for?

A

Replace engines, back up hospital power, power Road signs, in space craft for fuel tanks and water

18
Q

What is a displacement reaction?

A

A more reactive metal will displace a less reactive metal from its compound. Displacement reactions involve one metal kicking another one out of a compound

19
Q

What does hard water do?

A

Form limescale, and won’t easily form soap lather.

20
Q

What is the symbol&chemical equation of making alcohol through fermentation?

A 
Glucose = ethanol + carbon dioxide 
C6H12O6= 2C2H5OH + 2CO2

Chemistry (6 decks)

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