Answers

2015-06-26T18:21:39+08:00
Metal - they are good in conducting heat and electricity and also malleable
non-metal - poor conductor of heat and electricity
semi metals - substances that are both metal and nonmetal
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2015-06-26T23:40:19+08:00
Metals are elements that are shiny, malleable (can be pounded into a sheet), ductile (can be drawn into a wire), and good conductors of heat and electricity.

Non-metalsĀ are elements that are brittle and insulators of heat and electricity. Except for hydrogen, the non-metals are at the upper right of the periodic table.

Semi-metals, also called metalloids.
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