Name: J͟a͟m͟e͟s͟ B͟r͟i͟g͟g͟s͟

Q: What does yeast need to grow effectively?

Around 10 grams of sugar.

What do you want to find out?

How much amount of sugar will make yeast grow faster.

What is your hypothesis?

The smaller the amount of sugar the bigger chance of growing quicker.

My hypothesis was correct, the cup with the smaller amount of sugar (10 grams) grew faster.... BY A LOT.

What will I keep the same? What will I change?

I will keep the temperature the same and I will keep the amount of yeast the same but I will change the amount of sugar. One test will have twenty games of sugar and the next test will use fifty grams of sugar. The amount of time to grow will be five minutes. (Same amount of time for each test.)

How will you test it?

1. The ingredients you will need are: a small plastic bottle,a packet of yeast, a packet of sugar and kettle of boiling water (34*,degrees),
2. Put ten grams of yeast in the plastic bottle.
3. After that put ten grams of sugar.
4. After that  pour 200 ml of  water in the plastic bottle .
5. Wait for five minutes
6. After that measure the height of the gassy substance.
7. After that do the test all over again but this time poor twenty five grams of sugar.

Diagram of your investigation:

Your results:

10 grams of sugar	Size before: 0.5 cm	Size after: 8.5 cm	Foam: 8 cm
25 grams of sugar	Size before: 0.7 cm	Size after: 3 cm	Foam: 2.3 cm

A picture of the final results:

Your conclusion? (What did you find out?)

I have found out that the less the amount of sugar the faster and better the yeast will grow. I think this phenomenon happened because since there was more sugar it killed most of the yeast and it made it very hard to grow.