Crystals

Yesterday in science, we have done an experiment.

Aim: To produce copper sulfate salt by reaching the copper oxide with an acid.
Equipment: Copper oxide powder, dilute sulfuric acid, 50mL measuring cylinder, thermometer, spatula, evaporating basin, stirring rod.

How did we make our Crystals?
Method:
1. Add 20 mL of sulfuric acid to a 100 mL beaker Heat the acid until it reaches 70℃. Turn off your Bunsen burner.
2. Heated sulfuric acid.
3. Once heated, use a spatula to add pea-sized portions of copper oxide to the beaker. Stir the mixture for 30 seconds.
4. Repeat step 2 until no more will dissolve. Allow the beaker to cool.
5.. Fold the filter paper and place it in the funnel. Place the filter funnel into the second beaker.
6. Make sure the beaker is cool enough to hold at the top. The contents should still be hot.
7. Gently swirl the contents of the beaker to mix, and then pour into the filter paper in the funnel. Allow filtering through.
8. Rinse the beaker you used to heat the mixture previously, and place it back on top of your tripod filled with 50-60 mL of water.
9. Place the evaporating basin on top of the beaker and carefully pour some of the solutions from the beaker into the evaporating basin.
10. Gently heat the beaker until the solution in the evaporating basin has reduced by half.
11. Leave the evaporating basin to cool. Once cool, move the evaporating basin to a warm place where it will not be disturbed and observed over the next few days. Blue copper sulfate crystals should form.

What salt are the crystals?

Copper Sulfate.
Chemical reaction: Copper Oxide + Sulfuric Acid ➝ Copper Sulfate + Water