Louis Pasteur

• What did Pasteur find out about bacteria in the swan neck flask?

  The bacteria would not reach the liquid at the bottom and would not go mouldy unless the flask was tipped so the bacteria could reach it
• What did Pasteur find out about bacteria in a normal flask?

  The bacteria would reach the liquid at the bottom and would go mouldy
• When did Pasteur publish his germ theory?

  1861
• What did Pasteur say germs cause?

  They caused decay
• What did Pasteur create a better understanding of?

  fermentation
• What idea did Pasteur prove wrong and what did he find out?

  spontaneous generation - found that decay did not happen to sterilised matter that was left undisturbed as germs caused decay
• What is pasteurisation?

  When a liquid is heated to a certain temperature to kill bacteria which stops it from fermenting and going bad