Chemistry test 2 Properties of Metals Flashcards
1
Q
What are the common properties of metals? (5)
A
- solids with high melting points
- shiny (when polished)
- malleable
- high density
- good conductors of electricity.
2
Q
What is meant by the term malleable?
A
This means that they can be
hammered or rolled into shape without shattering.
3
Q
Why are metals malleable?
A
When you hit a metal, the layers of ions slide over
each other. The ‘sea’ of electrons holds the ions
together and so the metal changes shape instead of
breaking.
4
Q
What is Metallic bonding?
A
Metallic bonding is the electrostatic forces of attraction between the positive metal ions and the negative sea of delocalized electron.
5
Q
Which of the following has a higher electrical conductivity and why? Mg+2 and Na+
A
Mg+2 because is contributes 2 electrons to the sea of electrons while Na+ only contributes 1
6
Q
A
