Exploring Common Salts

What are the three main types of common salts?

• Zinc salts

• Sodium salts, Potassium salts, Calcium salts

• Iron salts

• Magnesium salts

Describe the process of neutralization in salt preparation.

• Neutralization involves mixing two acids to create a base.

• Neutralization is the process of evaporating salt from seawater.

• Neutralization occurs when a salt reacts with another salt to form water.

• Neutralization is the reaction of an acid with a base to produce a salt and water.

List two uses of sodium chloride (table salt).

• Cleaning windows

• Making soap

• Deicing roads

• 1. Seasoning food 2. Preserving food

What is the chemical formula for potassium nitrate?

• KNO2

• K2NO3

• KNO4

• KNO3

Explain how evaporation is used to prepare salts.

• Evaporation adds water to the salt solution, increasing its volume.

• Evaporation cools the salt solution, preventing crystal formation.

• Evaporation is used to concentrate a salt solution, leading to the formation of salt crystals as water evaporates.

• Evaporation dilutes the salt solution, making it less concentrated.

What safety precautions should be taken when preparing salts?

• Use bare hands for handling

• Ignore MSDS guidelines

• Prepare salts in a closed space

• Wear PPE, ensure ventilation, consult MSDS, handle chemicals carefully.

How can you test the purity of a salt sample?

• Perform solubility, melting point, or chromatography tests.

• Measure the color intensity of the salt

• Check the salt's odor

• Weigh the salt sample before and after heating

What is the role of acids in the preparation of salts?

• Acids are only used in the production of gases, not salts.

• Acids are used to dissolve salts into solutions.

• Acids react with bases to form salts through neutralization.

• Acids prevent the formation of salts during reactions.

Name a common salt used in fertilizers.

• Sodium bicarbonate

• Magnesium oxide

• Calcium sulfate

• Potassium chloride

What is the difference between soluble and insoluble salts?

• Soluble salts are always liquid; insoluble salts are solid.

• Soluble salts dissolve in water; insoluble salts do not.

• Insoluble salts dissolve in oil; soluble salts do not.

• Soluble salts are more expensive than insoluble salts.