bonding and structure (topic 2) Flashcards
1
Q
A
2
Q
A
carbon
3
Q
(2)
A
- the atoms are different sizes
- so there are no layers to slide
4
Q
what percentage of the atoms in the alloys are atoms of X
A
2/27 x 100
7.4%
5
Q
what type of substance is an alloy
A
mixture
6
Q
A
7
Q
(5)
A
- electrons transferred from potassium to sulfur
- two potassium atoms each lose one electron
- forming K+ ions
- sulfur atoms gain 2 electrons
- forming S^2− ions
8
Q
A
there are no gaps / sticks between the potassium ions and sulfide ions
9
Q
A
10
Q
A
the forces between iodine molecules are stronger
11
Q
A
brown
12
Q
A
it contains ions which can move
13
Q
A
hydrogen iodine
14
Q
(4)
A
- giant ionic lattice
- made up of atoms / positive ions
- with delocalized electrons
- so electrons can move through the metal
15
Q
describe how the structure of an alloy is different from the structure of a pure metal (2)
A
- an alloy is a metal which has different types of atoms
- alloy has distorted layers