National 3 Chemistry Unit 2 Revision Nature’s Chemistry

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Presentation transcript:

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