Science - Metals and Metal Compounds

Lustrous - All metals are shiny when polished or freshly cut Flexible - Metals do not break -- they bend Ductile - Metals can be drawn into wires Malleable - Metals can be hammered into sheets Sonorous - Metals ring like a bell when hit -  they do not make a dull thud Electrical conductor - All...

Lustrous - All metals are shiny when polished or freshly cut Flexible - Metals do not break -- they bend Ductile - Metals can be drawn into wires Malleable - Metals can be hammered into sheets Sonorous - Metals ring like a bell when hit -  they do not make a dull thud Electrical conductor - All metals conduct electricity Thermal conductor - Metals allow energy to flow through them, causing heating Diagrama Descripción generada automáticamente  **Naming the Salt Product ** Aluminium + nitric acid aluminium nitrate + Hydrogen Aluminium + hydrochloric  acid aluminium chloride + Hydrogen Aluminium + sulphuric acid aluminium sulphate + hydrogen\ Texto Descripción generada automáticamente **What happens if you mix an acid with an alkali?** If the acid and alkali were of equal strength (they were both strong or weak acids and alkalis) then the solution would become neutral. **What is the pH of a neutral solution?** The pH of a neutral solution is pH7. An example is pure water.  Interfaz de usuario gráfica, Texto, Aplicación Descripción generada automáticamente  Interfaz de usuario gráfica, Texto Descripción generada automáticamente  Interfaz de usuario gráfica, Texto, Aplicación Descripción generada automáticamente  **What is Acid Rain?** - **Definition:** Acid that contains weak acids - **Formation:** - **Sulphur dioxide + water** → Sulphurous acid (H₂SO₃). - **Nitrogen dioxide + water** → Nitrous acid (HNO₂) and Nitric acid (HNO₃). - **Carbon dioxide + water** → Carbonic acid (H₂CO₃). - **pH Levels:** - Normal rain: pH 5-6. - Acid rain: pH \~4 due to increased pollution. **Effects of Acid Rain** 1. **Environment:** - Damages soil by removing nutrients, harming agriculture. - Harms trees (e.g., red spruce loses calcium, reducing cold tolerance). - Low pH in water bodies is toxic to aquatic life, disrupting ecosystems. 2. **Infrastructure:** - Erodes buildings and statues made of limestone. 3. **Health:** - Linked to respiratory problems (e.g., asthma). **Solutions to Acid Rain** 1. **Reduce Emissions:** - Improve fuel-burning methods to produce less pollution. - Install catalytic converters in cars. - Use techniques like spraying water-limestone mix in smokestacks to reduce sulphur. 2. **Alternative Energy Sources:** - Invest in hydroelectric, nuclear, and other renewable energy sources. 3. **Conserve Resources:** - Use public transport, energy-saving appliances, and switch off unused lights. - Promote walking, cycling, and carpooling.