Question

3
• Some metals can be polished to a high lustre ,
Properties of non-metals
Non-metals are far more diverse in their appearance.
Non-metals share some common properties
.
• Non-metals are often soft and have low melting points
and boiling points. A number of non-metals are gases at
room temperature
• All non-metals are poor conductors of heat and, with
the exception of a form of carbon called graphite
, they
are poor conductors of electricity.
Activity 3.3.1
FG 332 Metals
Examining metals and non-metals
Here is what you need
Samples or pictures of some different elements
Here is what you should do
1. Look at each element carefully
.
2. Make a list of their features and determine whether
the element is a metal or a non-metal
.
FIG333 Non-metals
Properties of semi-metals
At first glance you might think that sihicon is a metal but it is
actually a semi-metal. It has a mixture of properties,
Metallic properties
• It is hard and shiny, and has a high melting point and
boiling point
Non-metallic properties:
• It is a poor conductor of heat and a much weaker
FG334 Silicon Oasen
med​

Answer 1

Answer:

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