Brainscape's Knowledge GenomeTM

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


See full index

Chem > general > Flashcards

general Flashcards

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

5 properties of compounds

A
  1. constituent elements are in a fixed ratio
  2. energy is usually taken or released during formation
  3. properties are very different from the properties of its constituent elements
  4. sharp boiling and melting points
  5. can only be separated by chemical methods
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

5 properties of mixtures

A
  1. substances in a mixture can be mixed together in any proportion
  2. no/little energy change during formation
  3. properties similar to that of its substances
  4. don’t have a sharp boiling and melting point
  5. constituents can only be separated by physical methods
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

5 properties of mixtures

A
  1. substances in a mixture can be mixed together in any proportion
  2. no/little energy change during formation
  3. properties similar to that of its substances
  4. don’t have a sharp boiling and melting point
  5. constituents can only be separated by physical methods
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

half equation

A

electron gains (17e- to 18e-) on the left, losses on the right (10e- to 9e-)

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

different ages

A

stone, copper, bronze, iron

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

metal extraction

A

K, Na, Ca, Mg, Al: electrolysis of molten ores
Zn, Fe, Pb, Cu: sulphides heated in air to obtain oxides, oxides heated with carbon to obtain metals
Cu, Hg, Ag: sulphides heated in air to obtain metals
Ag, Pt, Au: exist freely in nature

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

4 extraction methods

A
  1. metal + oxygen —heat—> metal oxide (all except Ag, Pt, Au)
  2. metal + cold water ——> metal hydroxide + hydrogen gas (first three, K, Na, Ca)
  3. metal + steam ——> metal oxide + hydrogen gas (first five + zinc, iron)
  4. metal + dilute acid ——> metal salt + hydrogen gas (first five + zinc, iron, lead)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

most reactive metals: most unreactive compounds, hardest to extract from their ores

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

positive electrode (anode) 🔴
negative electrode (cathode) 〰️

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

aluminium (3)

A
  1. strong, low density —-> making aircraft bodies
  2. good conductor of heat, malleable —> making kitchen foil
  3. low density, cheap —> overhead cables
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

copper (1)

A
  1. good conductor, ductile: making electric wires
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

gold (1)

A
  1. shiny, malleable, ductile: making jewellery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

iron (1)

A
  1. good conductor of heat, high melting point: cooking utensils
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

lead (1)

A
  1. very dense: fishing sinkers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

definition of alloy

A

a mixture of a metal and one or a few other elements. usually made by heating the metal and other elements together, causing them to melt and mix

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

carbon steel (1)

A

iron, carbon
1. stronger than iron, more resistant to corrosion —> making motor car bodies, construction materials

17
Q

titanium alloy

A

titanium, aluminium, vanadium
1. very strong, low density —-> making aircraft bodies, spacecraft bodies, glasses frames

18
Q

bronze

A

copper, tin
1. more corrosion resistant, harder than copper —> making statues

19
Q

brass

A

copper, zinc
harder than copper and zinc, more resistant to corrosion —> making musical instruments, making door knobs and keys

20
Q

duralumin

A

aluminium, copper, manganese, magnesium
stronger than aluminium, low density —> making aircraft bodies

21
Q

coinage metals

A

copper, zinc, nickel, tin
harder and shinier than copper, resistant to corrosion
making coins

22
Q

carat gold

A

gold, silver and copper
harder and shinier than pure gold
making ornaments, coins

23
Q

solder

A

tin, lead
has a lower melting point but is harder
for joining electronic parts in circuit boards

24
Q

more molecules

A

higher boiling point
darker shade of yellow
more viscous
less volatile
less flammable
more black smoke produced when burning

25
Q

lower levels to higher levels

A

hotter to cooler
higher boiling point = higher condensation point= larger molecules

26
Q

lower levels to higher levels

A

hotter to cooler
higher boiling point = higher condensation point= larger molecules

27
Q

crude oil fractions

A

LPG, petrol (gasoline), naphtha, kerosene, diesel oil, fuel oil, lubricating oils and waxes, bitumen

28
Q

lpg (2) (under 40)

A
  1. domestic fuels
  2. fuel for taxis and public light buses
29
Q

petrol (gasoline) 2 (40-70)

A

fuels for motor cars

30
Q

naphtha (1) (70-170)

A
  1. raw material for production of town gas, plastics and other chemicals
31
Q

kerosene (2) (170-250)

A
  1. fuels for aeroplanes
  2. used as solvents
32
Q

diesel oil (1) (250-350)

A
  1. fuel for heavy vehicles such as lorries and buses
33
Q

fuel oil (2) (over 350)

A
  1. fuel for ships
  2. used to generate electricity in power plants
34
Q

lubricating oils and waxes (over 350

A
  1. used to make lubricating oils and candles
35
Q

bitumen (over 350)

A

material for covering roads

Chem (3 decks)

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