Bubbling away

Which is the best brand of washing-up liquid?

Remember that water can get very hot!

If you get soapy liquid in your eyes, wash it out with plenty of cold water.

PLAN

What is the best way to test washing-up liquid?

Washing up is an obvious method.

But what else could you do?

You could investigate the bubbles.

How "bubbly" are they?

How long do they last?

Does the liquid remove greasy, stuck-on food?

Does the liquid leave streaks on glasses?

I WILL NEED

Several brands of washing-up liquid.

A supply of hot water.

I MAY NEED

Things to wash.

FAIR TEST

How much liquid will you use for each part of your investigation?

PREDICTION

Which brand do you think will be best?

Why do you think so?

PRACTICAL ACTIVITY

Give a clear step-by-step explanation of what you did.

What did you wash?

What method did you use?

How much liquid did you use?

What did you observe?

COLLECT

DATA

Much of your data will depend on observation.  How can you be sure that you are observing fairly?

ANALYSE

DATA

Some liquids may score well on some of your tests but not on others.  How will you show this?

PRESENT

FINDINGS

What is the best way to show what you did?

A step-by-step explanation?

Is it possible to give a demonstration?

What is the best way to show your findings?

EVALUATE

INVESTIGATION

If you have carried out this investigation, click the icon to send in your results to Brainboxx and we may publish your work on the website.  It is best to e-mail the results of your investigation or you may need to send them by post.  Make sure you get permission from a teacher, parent or other adult before you get in touch.

Bubbles

Bubbletown