Objective: To test for the presence of the carbonate ion.Materials: Sodium carbonate salt. Dilute hydrochloric acid. Distilled water. Magnesium sulfate solution. Test tubes.Procedure: Place a small amount of solid sodium carbonate in a test tube. Add a few drops of dilute hydrochloric acid to the tu......

Objective: To identify the difference between exothermic and endothermic reactions. Materials: Glass beaker, teaspoon, thermometer, water, magnesium oxide (MgO), sulfuric acid (H₂SO₄), baking soda (NaHCO₃), vinegar (CH₃COOH).Procedure:Place a small amount of magnesium oxide in a glass beaker.Add an......

Keywords: Meiosis – Gametes – Chromosomes – Prophase I – Crossing over

Objective: To extract DNA from strawberry cells and observe it with the naked eye.Materials: Ripe strawberry _ Resealable plastic bag _ Dish soap _ Table salt _ Warm water _ Cheesecloth _ Glass cup _ Alcohol _ Wooden stickSteps: Place the strawberry in the plastic bag and mash it thoroughly. Mashing......

Keywords: Body parts – Body organs – Interactive model – Body structure – Simplified anatomy

Keywords: Body parts – Body organs – Interactive model – Body structure – Simplified anatomy

Keywords: Magnetic properties – Transition elements – Unpaired electrons – Paramagnetism – Diamagnetism – Fe – Co – Ni – Cu – Zn

Keywords: Teeth – Mammals – Incisors – Canines – Molars – Feeding – Food

Keywords: Electrons – Energy levels – Principal quantum number – Electron configuration – Electron shell

Keywords: Distance – Displacement – Path length – Direction – Motion

Objective: Identify the properties of amphoteric oxides.Materials: Test tubes – test tube holder – spoons – aluminum oxide powder (Al₂O₃) – zinc oxide powder (ZnO) – diluted hydrochloric acid (HCl) – diluted sulfuric acid (H₂SO₄) – diluted sodium hydroxide (NaOH) – small burner – dropper.Procedure:......

Keywords: Sound resonance – Frequency – Vibration – Medium – Sound amplification – Sound waves

Objective: To illustrate the anatomy of chordates (notochord — dorsal nerve cord — pharyngeal slits — post-anal tail) by creating a simple model and observing it.Tools: Dissection tray – scalpel – forceps – Petri dish containing the specimen – dissection pins – magnifying lensSteps: Fix the specimen......

Keywords: Fish brain – Nervous system – Nerves – Balance – Senses – Dissection – Cerebellum – Brain

Keywords: Microscope parts – Eyepiece – Objective lenses – Frame – Stage – Light source – Fine focus – Coarse focus

Keywords: Selective permeability – Semi-permeable membrane – Diffusion – Molecules – Concentration – Osmosis

Keywords: Fish dissection – Gills – Fins – Internal organs – Digestive system – Skeleton

Keywords: Electrical conductivity – Water – Solutions – Electric circuit – Conductor – Insulator

Objective: To distinguish between reversible and irreversible reactions.Materials: Candle – white paper – egg – ice cubes – sugar – butter – heat source – heat-resistant container – tongs.Procedure: Observe each material before heating. Heat each material gradually and record the changes. Cool each......

Objective: To identify the components of the immune system in the human body.Materials: Diagram of the immune systemSteps:Identify the immune system organs in the diagram.Match the organs with their cards in the model.Connect each organ to its function in defending the body.Compare innate and adapti......