Insoluble Salts and Precipitation
A precipitation reaction forms an insoluble solid when two solutions are mixed, which can be filtered off.
▶ Interact
Play with the controls to see the idea in action.
📘 Learn
A precipitation reaction forms an insoluble solid when two solutions are mixed, which can be filtered off.
- The solid formed is called the precipitate
- Used to remove ions from solutions
- Used in water treatment
🧠 Quick quiz
Three questions. Score 2 or more to complete the topic.
What is Insoluble Salts and Precipitation?
Within Chemistry, which covers atoms, bonding, reactions, the periodic table, organic chemistry and the chemistry of everyday life, this topic explains Insoluble Salts and Precipitation. Chemistry links what you can see in the lab to the particles and bonds behind it, so each topic here shows that link in a model.
Check that you can explain Insoluble Salts and Precipitation in your own words and give one example from everyday life. If you can do that, you have understood the core idea.
Understanding Insoluble Salts and Precipitation helps you explain why substances behave as they do, from cleaning products and food to medicines.
Insoluble Salts and Precipitation in detail
An insoluble salt can be made by precipitation, mixing two soluble salt solutions so that the ions form an insoluble solid, called a precipitate. For example, silver nitrate and sodium chloride give a white precipitate of silver chloride.
The precipitate is filtered, washed with distilled water and dried. Solubility rules help you predict which combinations will precipitate: all nitrates are soluble, most chlorides are soluble except silver and lead, and most carbonates and hydroxides are insoluble. Precipitation is used in water treatment and in identifying ions.
How the interactive helps you understand Insoluble Salts and Precipitation
Watch the reaction model in the interactive. Use any sliders or buttons it offers to change the values and see how the reaction model responds.
Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of Insoluble Salts and Precipitation.
Real-life uses and examples
- Link Insoluble Salts and Precipitation to everyday products such as cleaning agents, food and medicines.
- Read a chemical equation or diagram and work out what Insoluble Salts and Precipitation shows.
- Explain Insoluble Salts and Precipitation in an exam by linking the particles involved to what you observe.
Common mistakes to avoid
- Mixing up the names of substances or ions when you describe Insoluble Salts and Precipitation.
- Describing what happens without explaining the particles or bonds involved.
- Learning the definition without testing it. Use the quiz and the interactive to check that you can apply the idea.
Frequently asked questions about Insoluble Salts and Precipitation
What is Insoluble Salts and Precipitation?
A precipitation reaction forms an insoluble solid when two solutions are mixed, which can be filtered off.
What are the most important points about Insoluble Salts and Precipitation?
The main points are: The solid formed is called the precipitate; Used to remove ions from solutions; Used in water treatment.
Why is Insoluble Salts and Precipitation useful?
Understanding Insoluble Salts and Precipitation helps you explain why substances behave as they do, from cleaning products and food to medicines.
How can I practise Insoluble Salts and Precipitation?
Open the interactive at the top of this page and change the controls one at a time. Predict the result before each change, then take the three-question quiz. A score of two or more marks the topic as complete on this device.
Which topics are related to Insoluble Salts and Precipitation?
Related topics in Chemistry include Displacement Reactions, Rusting and Corrosion, Electroplating.