Science notes
Speed= distance/time
moment= force × distance
movement LHS=movement RHS
pressure =force/ area
🍞 Carbohydrates
Main function: Give energy
They are the main source of energy for our body.
Help us work, play, think, and move.
Found in foods like rice, bread, wheat, fruits, and potatoes.
🧈 Fats
Main function: Store energy & keep us warm
Provide extra energy and help store energy.
Keep the body warm and protect organs.
Help absorb vitamins A, D, E, and K.
Found in butter, oil, nuts, seeds, milk, and ghee.
🥚 Proteins
Main function: Growth & repair
Help in growth of the body.
Repair damaged tissues and build muscles.
Important for healthy skin, hair, and nails.
Found in eggs, milk, pulses, beans, fish, and meat.
🧂 Minerals
Main function: Keep body healthy & strong
Help in strong bones and teeth (calcium, phosphorus).
Help in making blood (iron).
Support nerve and muscle function (sodium, potassium).
Found in fruits, vegetables, milk, nuts, and green leafy vegetables.
Exothermic
potassium + water → potassium hydroxide + hydrogen
Magnesium + hydrochloric acid→magnesium chloride+ hydrogen
calcium oxide + water → calcium hydroxide +heat
Oxygen
metal + O₂ → metal oxide
Water
metal + water → metal hydroxide + hydrogen
Steam
metal + steam → metal oxide + hydrogen
Dilute acids
metal + acid → salt + hydrogen