Write short answers to the following:
A teacher divides the class into four groups A, B, C, D and provides each group with a different sample. group A is given a few crystals of copper sulphate, group B is given one spatula full of wheat flour, group C is given chalk powder, and group D is given a few drops of ink.
Each group adds the given sample to water and stirs the mixture properly using a glass rod. Based on the observations made after stirring answer the following questions.
Each group adds the given sample to water and stirs the mixture properly using a glass rod. Based on the observations made after stirring answer the following questions.
1. Between Group A and Group B, which group forms a heterogeneous mixture?
2. Which mixture will leave residue on filter paper?
3. The mixture in Group D that contains ink mixed with water is an example of which type of mixture?