compounds, elements or mixtures, ecosystems or environments?
Sun and air? Study the seaside image for a few seconds . Try to describe it: You might say that the image shows : A calm sea, clear blue sky, br...
compounds, elements or mixtures ?
Sun and air? Study the seaside image for a few seconds . Try to describe it: You might say that the image shows : A calm sea, clear blue sky, br...
​ Students should: 1.3 understand how the results of experiments involving the dilution of coloured solutionsand diffusion of gases can be expla...
Crystallisation can be used to separate a solid solute from its solvent. Re-crystallisation is used to purify samples obtained in the laboratory. But what is a crystal?
Chromatography is another important separation technique. Several different types of chromatography exist.
Students should: 1.10 describe these experimental techniques for the separation of mixtures: simple distillation fractional distillation filtrat...
Filtration can be a simple technique used to separate insoluble solids from a mixture or suspension. It has a lot of everyday applications.
Distillation is used to separate liquids from one another. Visit this page to see distillation in the laboratory and look at an industrial scale process.
Find out about fractional distillation ; why it is different from simple distillation and how it can be used industrially
Sun and air ​Study the seaside image for a few seconds . Try to describe it: You might say that the image shows : A calm sea, cle...