EasyChemistryHigh School (9–10)GeneralMetals and Non-metals › Properties of Metals and Non-metalsConceptual
Say whether each is likely to be a metal or a non-metal.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Say whether each is likely to be a metal or a non-metal.
- A shiny solid that can be drawn into a wire and conducts electricity.
- A dull, brittle, yellow solid that does not conduct.
- A soft, shiny solid that is cut with a knife and kept under kerosene.
- A shiny, grey-black solid that conducts electricity and leaves marks on paper.
Need a reminder? The key ideaShow
Metals are usually shiny, hard, malleable, ductile, sonorous and good conductors, with high melting points. Non-metals are usually dull, brittle and poor conductors. Exceptions: mercury is liquid, sodium is soft and floats, graphite conducts, iodine is shiny, diamond is very hard. Metalloids such as silicon have properties of both.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) A metal, such as copper.
Step 2. (b) A non-metal, such as sulphur.
Step 3. (c) A metal: sodium or potassium.
Step 4. (d) A non-metal: graphite, the form of carbon that conducts.
Answer: metal, non-metal, metal, non-metal.
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