The experiment!

I had to plant the seeds 3 days before first to let them grow into seedlings for a fairer result.

Preparation: 

Pot A

Pot B

Pot C

Pot D

Day of experiment:

Data Logger

Measured pH of 0.5

Measured pH of 2.5

• Measured pHs of 4.5 & 7.

Day 1 - photos taken 6 hrs after liquids were added.

Pot A

Pot B

Pot C

Pot D

Day 2 -  

Pot A

Pot B

Pot C

Pot D

 Day 3 - 

Pot A

Pot B

Pot C

Pot D

Day 4 - photos were not taken for Pots A & B since the seedlings in them died.

Pot C

Pot D

Day 5 -

Pot C

Pot D

Materials Needed

 This are the materials needed for the experiment.

1 ml of water per pot

4 flower pots with draining systems

50g of soil per pot

Vernier Data Logger

• 4 liquids with pH levels of 0.5, 2.5, 4.5 & 7.
• 5 green beans per pot
• 1 Vernier pH probe

Trial experiment + materials + results

For the trial experiment, I place the green beans in cups rather than pots. The trial experiment did not go well as I poured too much water into the cups and thus the seeds 'drown' as a result. Here are the materials needed:

4 cups with soil

1 ml of water

• 5 seeds per cup

Results:

Day 1 - 

Day 2 - 

Day 3 - 

Day 4 -  

Introduction

Hello! I am doing a project on the acidity of soil. Hope you enjoy it! (: