Rough Guide to Gas

The Rough Guide to Gas

Is the rock suitable?

Some results

In this investigation, they measured the weight of the rocks, not the volume of water soaked up.

The rocks were weighed first, then stood in water for 10 minutes and weighed again.

They were then stood in water for another 10 minutes, then weighed yet again.

Results
  Sample A Sample B
Weight before standing in water 600g 570g
Weight after 10 minutes in water 630g 610g
Weight after 20 minutes in water 650g 615g

Fill in these answers:

Sidney SeagullAll correct - well done!

So which is best, A or B? How could we be sure that A really had soaked up the most water? Let's think about this question

Sidney SeagullI couldn't find any correct answers - are you sure you filled them in?

Sidney Seagull

Not quite - #correct# out of #maxQ#

Keep trying!

Sidney Seagull

Think carefully about each question and fill in the answers

tick

After 10 minutes:

value="#water10A#" accesskey="b" size="4" maxlength="3" /> g tick

value="#water10B#" accesskey="c" size="4" maxlength="3" /> g tick

tick

After 20 minutes:

value="#water20A#" accesskey="b" size="4" maxlength="3" /> g tick

value="#water20B#" accesskey="c" size="4" maxlength="3" /> g tick

tick