and these were the solvents used

morning fresf detergent

home brand white vinegar

golden canola oil

cutx nail polish remover and

normal water

and for your entertainment, this is what it looked like in the cup during the experiment

i've done my experiment but since there are too many pictures to upload, i'll just tlk about them..
so basically, the water, vinegar and oil had little effect on the permanent marker probably because they are not strong enough. they have some effect as it thickened or got rid of it a little bit but it wasnt very much
the detergent was better than those three and removed a bit more of the mark but the whole fabric just turned green (coz i used green detergent) so yeah....
the best results came from the nail polish remover. i think it worked because it is not one of those everyday stuff like water, oil, detergent and vinegar so has more chemicals which got rid of the mark
im quite happy with the results as it showed at least something that could get rid of the mark

Method for the 1st experiment (marking the objects)

1. Prepare objects with different surfaces such as plastic, glass and cotton
2. Get different 3 coloured sharpies and permanent markers of other brands and mark each surface with a one centimetre mark from each marker.
3. Wait for a period of 4 weeks.
4. Check how permanent the each marker is by noting the change of the mark and scrubbing.

Method for 2nd experiment:

1. Pour 20mL of each solvent into each container.
2. Mark a piece of cloth with a type of permanent marker.
3. Leave it in overnight.
4. Take it out of the solvent and scrub it.
5. Note any colour changes and record the results.

my beautiful climatic graph...

yea here it is...

i did two separate graphs and then put them together on paint since im hopeless at photoshop and as katherine pointed out, there isnt suppose to be a 'c' in between the 'a' and 't' in climatic

today i bought a new pack of sharpies for my experiment. i was trying them out but now i have a headache... permanent markers do not smell very nice TT
anyways i went on the internet to find out more about permanent markers and while researching i also (unfortuantely) found out the actual answer for my experiment- no permanent markers are not permanent
according to ehow, for a permanent markers to be permanent, it only has to satisfy two qualifications:
1. it dyes or pigments and
2. it must adhere to most surfaces and be water-resistant

i did some research on permanent markers and i found that it is generally water resistant as it contains solvents such as xylene, toluene or alcohol but can be removed with denatured alcohol, acetone, steam
so for my experiment i'll also try using nail polish remover which contains acetone to get rid of the mark...

today i did my marking of the permanent markers and marked on plastic (my calculator), glass (this wine bottle), metal (this metal thing that holds stuff) and cotton (one of my old t-shirts) and i marked each one with a black, orange, red and blue? sharpie
and now i wait...

for the permanent marker experiment i would use permanent marker to draw on some different objects with different surfaces and leave for a period of time and see if there are any signs of it coming off

and while im waiting for that, i'll draw a line on a piece of cloth with the same colour permanent marker and put soak it different solvents such as water, alcohol, vinegar, detergent and oil and if soaking doesnt work ill get a scrubber, dip it in each solvent and scrub and compare it to the original mark

lastly i'll do the same for a few brands and colours of the permanent marker and compare the results

for this experiment the independent variable would be the time and the different solutions and the dependent is the visibility of the mark
controlled variable would be the using the same permanent marker for each experiment, the amount of solvent in each cup, the time it is left in every solvent and using the same scrubber to scrub the mark

and all i can do now is hoping that Ms Zhang will approve of this...

i did just a little practice run of the experiment and the results were not very...good so i was thinking of changing my experiment to something that was a bit more reliable and not as 'bug attracting' and i was thinking of experimenting with the permanent markers and testing if they are actually permanent and what solvent will remove the ink and if all the brands of permanent markers will be the same...

...

ive been trying to think for more ideas but nothing good is coming to me so i'll prob have to stick with the mouldy fruit for now...
and for planning, i'll prob just get a few fruits (cut into the same size) from each type of fruit, place it in paper plates and leave it in the garage and i'll check every day to see if it grew moulds, and i'll keep a themometre somewhere near there so i can keep track of the temperature
independent variable- time, fruit
dependent variable- amount of moulds
Controlled variables- location, quantity, temperature, same measuring eqiupment
and i might repeat the process with other fruits just to make sure that its done correctly
it'll be something like this...

i dun noe what i did but now everything is indented... help?

i think instead of the 'what types of food attracts mould' i'll change it to 'what types of fruit attracts mould the best' because there's like tonnes of types of food and within each type of food there another ten thousand type of food and i'll have to get more than 1 for each type of food so it'll probably be a bit to complicated and the results might not be exact...
so i searched the types of fruit and it came up with
Pome, Citrus, Stonefruit, Tropical, Berries, Melons, Tomatoes and avocados so i'll probably get a few fruits from each type and do it~

ideas?

so ive been thinking...and i was thinking of doing what kind of food do moulds like best or maybe which softdrinks has the most acidity. i found these on the internet and though they were interesting...

Hello World~