Introduction to chemistry
Review Questions (30 marks)
What distinguishes a mixture from an impure substance?
Define the process of sublimation.
How do decantation and filtration differ? Which should be faster?
Why does one never weigh a hot object?
How does this experiment illustrate the principle of conservation of matter?
A mixture was found to contain 3.10 g of SiO2, 0.38 g of cellulose, and 6.72 g of calcium carbonate. What is the percentage of CaCO3 in this mixture?
