Science

Apuntes

• Carbohydrates: To provide energy so muscles can contract to move. Examples include pasta, bread, chapatis, and potatoes. • Fats and Oils: To store energy and insulate organs. Examples include butter, vegetable oils, whole milk, and full-fat cheese. • Proteins: For growth and repair of cells and tissues. Examples include eggs, meat, cheese, and beans. • Vitamins: Important for body processes and general health. Found in fruits and vegetables. • Minerals: Needed to make blood and bones. Found in fruits and vegetables. • Fibre: Bulks up food to pass easily through the digestive system. Examples include wholemeal bread and potatoes. • Water: Needed for chemical reactions and transporting substances. Found in juicy fruits and drinking water. • Sodium (Na): Element found on the periodic table. A highly reactive metal. • Chlorine (Cl): Element found on the periodic table. A toxic green gas. • Sodium Chloride (NaCl): A compound of two different atoms chemically combined. Commonly known as table salt. Na + Cl₂ → NaCl • pH Scale: Know the pH for acids, alkalis, and water. - Acids: pH below 7 - Water: pH 7 - Alkalis: pH above 7 Examples: -...