Question

The angle of an isosceles triangle is four times the vertical angle calculate the size of the angle of the triangle

Answer 1

Explanation:

17. Match the description (a) to (d) below with appropriate

term from the list A to H.

A Acidic oxide

B. Alkali

C. Amphoteric oxide

D. Basic oxide

E. Deliquescence

F. Efflorescence

G. Electrolysis

H. Electrolyte

(a) The property of spontaneously giving up water of

crystalisation to the atmosphere.

(b) A liquid or a solution which conducts electricity

with accompanying chemical change.

(c) A compound which is soluble in water and the only

negative ions in the solution are hydroxide ions.

(d) An oxide which forms salts when it reacts with both

acids and alkalis.