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1. ------------------- are good conductors of heat and electricity. a)Metals b)Non-metals
a)Metals
2. ------------------- are not shiny and can’t be bend (breaks down) a)Metals b)Non-metals
b)Non-metals
3. ------------------- are used in making electric wires. a)Metals b)Non-metals
a)Metals
are used for making cooking spoons. a) Metals b) Non-metals
Non-metals
1- It consists of one type of atoms ( Element - Compound)
Elements
2- It consists of more than one type of atoms ( Element - Compound)
Compound
3- The smallest part of an element ( atom- molecule)
atom
4- The smallest part of a compound that still has its properties. ( atom-molecule)
molecule
5- The positively charged particles inside the nucleus of the atom ( protons-Neutrons-Electrons)
Protons
An electric circuit was cut, Noha wants to replace the cut wire with any other thing she can find at home in order to make the lamp of the circuit light up again. Which element might she use?
A good conductor should be used to complete the circuit ,Metals are good conductors of electricity so any kind of metal as copper can be used.
A factory which makes foldable chairs (can be folded), is looking for an element to be used to make a strong and at the same time light chair. Which element to be used.
A light weight strong material is needed to make the foldable chair .Aluminum
