Decomposition

Aim: To learn about the rate that different materials decompose.

Hypothesis: Bananas, white stylophone, paper, and bread. I think the bread will decompose the fastest.

Materials:

• Test tubes x 4

• Test tube holder.
• White stylophone.
• Paper.
• Bread.
• Bananas.
• Water.

Steps:

1. Set up a test tube holder.
2. Put 4 test tubes in the holder.
3. Put Bread in one tube.
4. Put paper in one tube.
5. Put white stylophone in one tube.
6. Put Bananas in one tube,

Findings:

3 weeks	Colour	Change	Observations
Banana	Yellow	Black/brown	Got fluffy on it. steam is brown. juice out. Stinks.
Paper	Brown	Brown	It looks exactly the same 3 weeks ago.
Stylophone cup	White	White	It looks exactly the same 3 weeks ago
Bread	White/Brown	Black/White	Changed form. black piece in it. A lot of water at the bottom.

Conclusion: