VCE Biology Unit 1 Investigation: Algal Balls, Hydrogen Carbonate Indicator

[KaleidoKitty]

I'm about to do a Student Designed Investigation where we make algal balls, place them in hydrogen carbonate indicator solution and record the change of colour in relation to pH changes caused by the CO₂.

I would just like to know how other people have designed this experiment.

Thanks!

[Joseph41]

I'm about to do a Student Designed Investigation where we make algal balls, place them in hydrogen carbonate indicator solution and record the change of colour in relation to pH changes caused by the CO₂.

I would just like to know how other people have designed this experiment.

Thanks!

Hey KaleidoKitty,

Welcome to ATAR Notes! I've just moved your thread from the New Users' Lounge to the VCE Biology board, where it should get more traction and, hopefully, some higher quality responses.

Unfortunately, I didn't do Bio myself, but I'm sure somebody will be able to help out!

[Bri MT]

Hey, so I didn't do this particular experiment but here are a few things to consider:
- what are your dependent and independent variables
- whats your hypothesis
- how will you minimise the impact of extraneous variables

Is there anything specific that you're unsure about?