2.1 Atoms and reactions Flashcards
1
Q
what is a mass spectrometer?
A
- a piece of apparatus that can be used to identify a compound, find the relative abundance of each isotope of an element and determine structural info about molecules
2
Q
dm3 to cm3
A
times by 1000
3
Q
cm3 to dm3
A
divide by 1000
4
Q
m3 to dm3
A
times by 1000
5
Q
how do you convert degrees Celsius to kelvin?
A
(degrees in Celsius) + 273
6
Q
atom economy=
A
mr of desired product/mr of total products then multiplied by 100
7
Q
% yield=
A
actual/theoretical then multiplied by 100
8
Q
benefits of high atom economy
A
- less raw materials needed so more sustainable
- more efficient
- waste is minimised
9
Q
acids…
A
release H+ ions in (aq) solution
10
Q
strong acids…
A
completely dissociate in (aq) solution
11
Q
weak acids…
A
partially dissociate in (aq) solution
12
Q
alkali
A
- a base that dissolves in water, releasing H+ ions
13
Q
acid + metal oxide/hydroxide =>
A
salt + water
14
Q
acid + metal carbonate =>
A
salt + carbon dioxide + water
15
Q
acid + alkali =>
A
salt + water
