1. what the meaning of element? mention the example!
2. what the meaning of compound? mention the example!
3. Mention the kind of mixture and explain it!
4. Write the symbol of elements below :
a. Sodium
b. Iron
c. phosporus
d. helium
e. silver
f. gold
5. Mention the properties of compound!
6. Mention the ways to separate mixtures!
7. explain the difference between metal and non-metals elements and mention the example of each other!
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