11:19

Lesson 7: Blood Vessels (Arteries, Veins, Capillaries) Structure and function

11:56

Lesson 6: Structure and functions of the heart

17:41

Lesson 5: Transpiration

05:32

Lesson 4: Vascular bundle (Xylem and Phloem)

04:30

Lesson 3: Absorption of water and mineral salts

06:50

Lesson 2: Structure of a stem

07:30

Lesson 1: Structure of a root and root hairs

13:58

Lesson 13: Halogens

15:26

Lesson 11: Alkali Metals

09:29

Lesson 12: Alkaline Earth Metals

01:59

Lesson 14: Uses of Alkali Metals

04:52

Lesson 12 Physical Properties of Alkali Metals

08:08

Lesson 9: Chemical Formulae

05:39

Lesson 10: Chemical Equations

03:00

Lesson 8: Radicals and oxidation number

06:50

Lesson 7: Ion formation

03:06

Lesson 6: Relative atomic mass

03:46

Lesson 5: Periodic table of elements

04:29

Lesson 4: Energy Levels and electron arrangement

03:29

Lesson 3: Isotopes

03:13

Lesson 2: Atomic Number and Atomic mass

03:37

Lesson 1 Structure of an Atom

10:13

Lesson 13: Structure of a leaf

10:11

Lesson 14: Photosynthesis

03:20

Lesson 12: Active transport (Physiological Processes}

14:01

Lesson 11: Osmosis (Physiological Processes)

11:05

Lesson 10 - Diffusion (Physiological Processes)

04:58

Lesson 9: Cell Physiology - Introduction

06:09

Lesson 8: Tissues, Organs, organ systems

12:07

Lesson 6: The Cell

09:34

Lesson 4: Taxonomic Units of Classification

04:26

Lesson 7: Cell specialization

05:22

Lesson 2: Characteristics of living things

04:24

Lesson 5: Scientific Naming of organisms

05:52

Lesson 3: Introduction to classification of organisms

04:59

Lesson 1: Introduction to Biology

24:06

Lesson 25: Oxygen

12:05

Lesson 29: Hydrogen

04:26

Lesson 28: Reaction of metals with steam

04:24

Lesson 27: Reaction of water with metals

03:20

Lesson 26: Introduction to water and hydrogen

06:18

Lesson 24: Rusting

02:33

Lesson 23: Factional Distillation of Liquified air (Manufature of oxygen)

13:04

Lesson 22: Introduction to air and combustion

04:44

Lesson 21: Properties, effects, applications and uses of acids and bases

04:52

Lesson 20: Reaction of acids with bases

03:40

Lesson 19: Reactions of acids with carbonates and hydrogen carbonates

04:24

Lesson 18: Properties of acids

12:42

Lesson 17: Introduction to acids, bases and indicators

03:43

Lesson 16: Chemical Symbols

06:55

Lesson 15: Elements and compounds

09:50

Lesson 14: Temporary and permanent chemical changes

05:01

Lesson 13: Effects of impurities on melting and boiling points of substances

06:36

Lesson 11: Effects of heat on matter

04:19

Lesson 12: Kinetic theory of matter

05:21

Lesson 10: Separation of colored substances

09:32

Lesson 9: Separation of Liquid-Liquid Mixtures

14:20

Lesson 8: Separation of Solid-Liquid Mixtures

05:23

Lesson 7: Separation of Solid-Solid Mixtures

02:26

Lesson 6: Introduction to mixtures