Long Answer Type Questions
07. List three chemical properties of metals.
Q8. Discuss properties of ionic compounds.
Q9. Explain how pure copper is obtained from its impure form ?
Answers
Explanation:
7:The density of metals is usually high.
Metals are malleable and ductile.
Metals form an alloy with other metals or non – metals.
Some metals react with air and corrode. ...
Metals are good conductors of heat and electricity. ...
Generally, metals are in a solid state at room temperature.
8:They form crystals. ...
They have high melting points and high boiling points. ...
They have higher enthalpies of fusion and vaporization than molecular compounds. ...
They're hard and brittle. ...
They conduct electricity when they are dissolved in water. ...
They're good insulators
9:Pure copper sulphate can be obtained from an impure sample by re-crystallization. The impure sample is dissolved in water, heated and then cooled which then later forms crystals. These copper sulphate crystals are then separated by filtration and drying.