(a) State two differences in the chemical properties of metals and non-metals. (b) List two general methods of extract metals from their ores.

Which of the following would increase the rate of reaction of chips of a metal M as shown in the equation below? M(s) + 2HCI(aq) → MCI2(aq) + H2(g)

Catalytic hydrogenation of alkenes produces compounds with the general formula

The number of replaceable hydrogen atoms in one acid indicates its

The components of universal indicator solution can best be separated by

The oxidation number of phosphorus in PO 3/4 is

A measure of the degree of disorder in a chemical system is known as the

In any chemical reaction, the total mass of the products is always equal to that of the reactants. This is statement of the law of

Which of the following is not a property of magnesium oxide?