SS3 Chemistry – Metallic Bonding
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SS1 Agric. Science – Reproduction in Farm Animals
The reproductive system of farm animals Reproduction is the biological process that gives rise to new organisms (offspring) from their parent. This includes all the organs and tissues concerned with
SS1 Chemistry – Introduction to Hydrocarbons
CONTENTS Sources of hydrocarbon Classification (of aliphatic hydrocarbon) Petroleum and natural gas (i) Refining of Petroleum by fractional distillation (ii) Uses of different fractions PETROLEUM CHEMISTRY HYDROCARBON AND
SS1 Chemistry – Elements, Symbols, and Equations
CONTENT ELEMENTS AND SYMBOLS CLASSIFICATION OF ELEMENTS VALENCY ELEMENTS AND SYMBOLS An element is a substance that cannot be split into simpler units by ordinary chemical processes. There are
