Objective:Identify the effect of the reaction of reactive metals with hydrogenMaterials:Glass beaker – Water – Lithium – Sodium – Potassium – Tongs – Thermometer – Phenolphthalein solutionProcedure:Fill three beakers with equal amounts of water Add a few drops of phenolphthalein solution to each bea......

Keywords: Bernoulli’s principle – Pressure – Velocity – Fluids – Flow

Keywords: pH – Litmus paper – Solutions – Acidic – Basic

Keywords: Reaction time – Sight – Hearing – Nervous system – Reflexes

Keywords: Light – Sight – Eye – Vision – Light perception

Keywords: Vernier caliper – Precise measurement – Lengths – Measuring tools

Keywords: Equation balancing – Chemical equilibrium – Reactants – Products – Atoms

Keywords: Rutherford model – Atomic nucleus – Alpha particles – Gold foil

Keywords: Prism – Light refraction – Dispersion – Light path

Keywords: Epithelial tissues – Simple – Compound – Cells – Covering

Keywords: Myopia – Hyperopia – Astigmatism – Lenses – Vision

Keywords: Uniform speed – Variable speed – Average – Instantaneous

the goal:The hydrogen atom discrete spectroscopyMaterials and tools:Hydrogen gas electrical discharge tube - triple glass prism - white screen - two vertical micro-slits opposite each other - metal rod - connecting wiresSteps:1-Connect the positive terminal of the voltage source to the base of the e......

Keywords: Polysaccharides – Starches – Iodine – Food

Keywords: Current – Electricity – Electrons – Circuit – Voltage

Keywords: Kelvin experiment – Static electricity – Voltage – Charges

Keywords: Osmosis – Semipermeable membranes – Concentration – Water – Diffusion

Keywords: Nitrite anion – Griess reaction – Pink color – Chemical analysis

Keywords: Free fall – Gravity – Acceleration – Time – Motion

Keywords: Vectors – Addition – Resultant – Angle – Force

Keywords: Light – Plants – Photosynthesis – Growth – Energy

Keywords: Soil – Plants – Growth – Requirements – Water

Keywords: Water transport – Plant – Roots – Vessels – Transpiration

Keywords: Amylase enzyme – Temperature – Digestion – Starch – Enzyme activity