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...