A mixture of copper sulfate and water is heated, leaving a residue of copper sulfate in the container. Which method was used to separate the mixture?

Chromatography
Filtration ****
Distillation
Evaporation

2 What type of model best represents cyrstals?

ball-and-stick ****
space-fill
ribbon
Lewis dot

3. Which option describes the molecule geometry of a molecule with one bond and three lone pairs?

angled
tetrahedral ****
octahedral
linear

3 answers

I don't agree with your answer to #1. What did you filter?What do you separate in a filter?
#1 is in fact filtration
No #1 would be evaporation. Because you evaporated the water out.