q1)a)ethanol will catch fire(light up with fire).
b) i only know 1 .
q2)A)we take a sample of the cleaner in a test tube
B) we put the test tube in water bath till all liquid is evaporaed and only solid is left.
C)we take the solid left and we add water on it. the solid should not dissolve if it is insoluble.
q3)we take soil samples from both feilds ,we put them in test tube A, and test tube B.
we crush both soil samples(each by its own) using pestal and mortar. then we add water on crushed soil samples and we stirr using a glass rod.then we make filtration to the mixture(u may draw it) , and we take the solute.
using a pH meter we measure the pH of both samples.
q4)we do the following rxn(i did not specify cause i am tired!)
rule for u: there is no rxn between less reactive metal(ex:Zn) and more reactive metal ion(MgO).
1)Cu + ZnO= no rxn
2)Zn+MgO= no rxn
3)Cu+MgO=no rxn
q5)we take three samples from each chemical from the bottles.
from the first sample of each bottle we add drops of NaOH, the sample which is copper(II) sulphate forms a pale blue percipitate.
from the second sample of each bottle , we put each sample(seperated) in a watch dish and we touch its surface with a lighted splint the sample which is alkene will catch fire.
from the third sample of each bottle, we put in a beaker and we put a delivery tube in it(under the liquid) and we respire(blow) through the tube , the sample which is limewater will turn milky.
ah finally finished
