Chemistry Experiment – Making Salts

The scene lets students explore and review an experiment designed to develop scientific enquiry skills. By reviewing the apparatus, and key information, students will review and evaluate the experiment to deepen their understanding on obtaining evidence and data to draw a suitable conclusion about their observation. In this case, preparing a salt solution from an insoluble reactant and evaporating it to make salt crystals.

# Learning objectives

Be Able to Describe how a Salt Solution is Prepared from a dry Insoluble Oxide or Carbonate{.info}

Be Able to Describe an Evaporation Technique to Evaporate a Solution and make Salt Crystals{.info}

# Making Salts{.objective .objective1}

In this section the apparatus will be reviewed and a suitable method for making salt solutions from an appropriate reactant will be described. The key safety aspects will be outlined that will determine if a metal, metal oxide or metal carbonate will be used to make a solution. Students will review the apparatus and the first part of the method for the preparation of salt solutions.

# Drying Crystals{.objective .objective2}

In this section a description, the second part of the experiment will be described. The method of drying a solution will be outlined and how crystals will be obtained from the salt solution made. The two stages of evaporation will be described, where one part will involve heating the solution, and the second part will involve evaporating the remaining water without directly heating it. Once the solutions have been made, the second part of the method in making the salt crystals, drying them, should be outlined by students.

# Teacher Resources

### Download Teacher Notes

[](https://data.avncloud.com/activities/795074/files/Chemistry%20Experiment+%E2%80%93+Making+Salts+Teacher+Notes+1.pdf?date=1678202347&size=1231481&md5=0e690e7bb81d6ce5377807bfbc95925f)

### Student Quiz Answers Document

[](https://data.avncloud.com/activities/795075/files/Chemistry%20Experiment+%E2%80%93+Making+Salts+Teacher+Notes+2.pdf?date=1678202403&size=629574&md5=a174b310bce56365d8831389188923b4)

### Download Student Quiz Document

[](https://data.avncloud.com/activities/795076/files/Chemistry%20Experiment+%E2%80%93+Making+Salts+Teacher+Notes+3.pdf?date=1678202506&size=94781&md5=e1d6d63844d4399c9603ee5a6c633f6f)

# Science Labs Sample Questions

**Chemistry Experiment – Making Soluble Salts**

## Practice Question

Describe a suitable method for making the soluble salt, Copper Sulphate.

## Mark scheme

This question is designed to target the suitable method used to make copper sulphate, but to also address the correct apparatus and substances needed to make it.

Check the students written task for the following.

**Apparatus – Students to show appropriate use where relevant**

- Beakers
- Bunsen Burner
- Spatula
- Tripod and Gauze
- Evaporating basin
- Stirring rod
- Filter paper
- Filter funnel
- Dilute Sulphuric acid
- Copper Carbonate (or alternative copper base)

**Method**

- Pour a known volume of dilute sulphuric acid into a beaker
- Place of tripod and heat gently with a Bunsen burner
- Use the spatula to transfer the copper carbonate into the acid and stir
- Continue to add the copper carbonate until it stops dissolving
- Remove from heat and allow to cool
- Using the filer paper and funnel, filter the aqueous copper sulphate to remove the copper carbonate precipitate
- Placing the solution into an evaporating basin and allow to dry