Aim, Hypothesis, Material, Method

Aim: to investigate how much longer it takes bread with preservatives to grow mold than it bread without preservatives

Hypothesis: the bread without the preservatives will grow the mold the fastest.

Materials:

• 2 bread loaves- with preservatives and without
• cotton swab
• dropper
• zip lock bags
• gloves
• knife
• low tray
  

Method:

1. Buy the same type of bread with and without preservatives of the same brand.
2. Cut 10 slices of 10x10x2 cm of bread from the center of the bread loaf without preservatives.
3. place 5 cuts of the non preservative bread in sealed, labelled zip lock bags
4. Get a cotton swab and collect some dust and swab on each slice of bread and then add 5 droplets of water, using a dropper, to each slice of non preservative bread
5. do this to 5 slices and place in sealed, labelled zip lick bags.
6. Check every day at approx. the same time and record observations and results if any.
7. Place all samples in zip lock bags in a low tray away from the light.
   
8. Repeat steps 3-7 with bread that contains preservatives.
9. Repeat experiment with a new batch of breads.