National 3 Chemistry Unit 2 Revision Nature’s Chemistry
Chemistry in Society 1 2 3 4 5 6 7 8 9 10 11 12
What is the name for a substance that burns to give off energy? A fuel
Name a substance/chemical made from only hydrogen and oxygen atoms. A hydrocarbon
Name the three parts of the fire triangle. Heat, Fuel and Oxygen
What name is given to fuels that come from Oil, Natural gas and Coal? Fossil Fuels
When sulfur dioxide reacts with water in the atmosphere, acid rain is produced. Give one example of a damaging effect of acid rain. Acidifies soil or Acidifies lakes or Damages buildings.
Name the gas that is produced when a hydrocarbon fuel is burned in lots of oxygen? Carbon dioxide
What is the test for carbon dioxide gas? Turns limewater milky/cloudy
This substance turns brown iodine solution blue/black. starch
State which substance turns Blue Benedict’ Reagent brick-red/orange glucose
What is the name of the process that converts sugars into alcohol? fermentation
What is the name of the chemicals that make soil “fertile” and help grow lots of crops? Fertiliser
Name a plant and a useful product that it supplies to humans. Indigo plant blue dye or Willow aspirin Pine timber