Thursday 25 April 2013
5.3 describe experiments to determine density using direct measurements of mass and volume
Using a set mass of one object (eg 100g of water) change the space its in (eg 200ml cylinder taking ten off the ml each time.) Use the formula mass/volume to find the density, it will go up as the volume decreases.
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This doesn't make sense, take ten off the what ml?
ReplyDeleteDecrease the size of the container by 10ml each time.
DeleteSo start with a 200ml container:
100g/200ml= 0.5 g per ml
Then use a 190ml container:
100g/190ml= 0.53 g per ml
and so on, watching the density change.
w0t
ReplyDeleteThe shit is this
ReplyDeleteI've commented bellow if that helps
DeleteThis is how I would do it:
ReplyDelete1. Measure the mass of the object you are measuring the density of
2. Measure the volume:
If the object is irregular: take a set amount of water (eg. 100ml) and put the object in the water making sure it is fully submerged. Measure the rise of the water (eg. From 100ml to 130ml).
If object to regular you can measure lengths to find the volume.
3. Then use formula mass/volume to get the density
Thanks Ella Grace
ReplyDeleteyou could use a density can too
ReplyDeleteWhat about just finding the mass of the irregular object and then the volume of the water and just doing; density = mass/volume??? would this still work
ReplyDeleteI think so...
DeleteHi Hannah. Thanks for this fantastic blog! Just one comment: I don't think the density of water changes at all in this experiment because the volume of water doesn't decrease if the mass stays the same. For example, water will occupy a greater depth in a container with a small length and width and vice-versa so the volume doesn't change.
ReplyDeleteI was thinking the same thing- you can't really compress liquids
Delete