
A. Fusion: Fusion is when a solid is heated until it turns into a liquid by breaking its intermolecular forces.
B. Vaporization: Vaporization is when a liquid changes into a gas by applying heat.
C. Condensation: Condensation is the process where a gas turns into a liquid, the reverse of vaporization.
D. Solidification: Solidification is when a liquid turns into a solid, the reverse of fusion.
E. Sublimation: Sublimation is when a solid turns directly into a gas without becoming a liquid first.
F. Deposition: Deposition is when a gas turns directly into a solid without becoming a liquid first.
(i) The kind of person the doctor is (money, possessions)
(ii) The kind of person he wants to be (appearance, ambition)
ABCD is a quadrilateral in which AD = BC and ∠ DAB = ∠ CBA (see Fig. 7.17). Prove that
(i) ∆ ABD ≅ ∆ BAC
(ii) BD = AC
(iii) ∠ ABD = ∠ BAC.
