Q. (a) Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions.
(b) Explain why Carbon tetrachloride does not dissolve in water.
(c) Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in ?
(d) Can Q and S, both be metals ? Justify your answer.
(e) The property which is characteristic of an electrovalent compound is that :
A. it is easily vaporized,
B. it has a high melting point,
C. it is a weak electrolyte,
D. it often exists as a liquid.
(f) When a metal atom becomes an ion :
A. it loses electrons and is oxidized,
B. it gains electrons and is reduced,
C. it gains electrons and is oxidized,
D. it loses electrons and is reduced.