Alkenes are a homologous series of hydrocarbons which are made by cracking larger alkane molecules. Write the general formula for alkenes. ................................................................................................................................... (ii) Explain the need for cracking larger alkane molecules. ......................................................................................................................................... . ................................................................................................................................... (iii) Describe two conditions needed for cracking. 1 ...................................................................................................................................... 2 ......................................................................................................................................

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_m24_qp_32 Year：2024 Question No：4(a)

Answer:

8.2.1.1. decreasing melting point

8.2.1.2. increasing density

8.2.1.3. increasing reactivity

8.2.2. Predict the properties of other elements in Group I, given information about the elements