6. Name a solvent that can be used for the following: (a) removing ink from clothes
(b) cleaning greasy hands
7. How can one separate and collect the solvent from a salt solutio
8. Explain how Elianto oil is obtained from maize seeds.
9. Give two examples of:
(i) temporary physical change.
(ii) temporary chemical change.
(iii) permanent change.
10. List three differences between temporary and permanent chan
Il Spots of pure pigments A and B, and a mixture Z were place
allowed to dry. The paper was then dipped in a solvent. The re
on the paper chromatogram.
(a) Which is the:
(i) base line?
(ii) solvent front?
-С
OX
Which of the nure nigments was a co​

- decrease the number of plants and animals living in the water.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

c. electrical charges of ionic bonds.