Chromatography Lv4: Describe the term chromatography. Lv5: Explain how to chromatography works using solubility. Lv6: Investigate the substances in different coloured pens. Entrance Activity Complete the key word match up activity handout on your desks. Key Terms Chromatography Separation Solubility Soluble Mobile
Please add this definition to your glossary! Key Term Chromatography Chromatography is a separation technique used to separate mixtures with coloured components. E.g. Inks, dyes, and food colouring. Interesting fact Chromatography is a widely used technique in science. Many different professions use this technique to discover what chemicals make up a substance.
Teacher Explanation Chromatography demonstration
Learning Activity Describe what is happening in the picture above. Try and use as many of the key words as possible. Success criteria Lv3- Images drawn into book. Lv4- Basic description of what is happening in each picture Lv5- Detailed explanation of how the ink is seperating. Key Words Solvent Dissolve Ink Soluble Mobile phase Stationary phase
Chromatography Lv4: Describe the term chromatography. Lv5: Explain how to chromatography works using solubility. Lv6: Investigate the substances in different coloured pens. Entrance Activity Complete the key word match up activity handout on your desks. Key Terms Chromatography Separation Solubility Soluble Mobile
Student reading activity How does Chromatography work? Think of chromatography as a piggie back race. At the start line you’ve got a number of different chemicals, each one individual with different properties. As the solvent rises up the paper and the race begins(the mobile phase), the solvent carries the chemicals up the page. Some chemicals are able to rise up the paper faster than other as they are more soluble in the solvent, therefore they’re easier to carry. Whereas, some chemicals are less soluble and more difficult to carry up the page. As the solvent rises higher some chemicals get left behind and stick to the paper (stationary phase). Eventually, there should be a spread of chemicals across the filter paper.
Give a definition for the term chromatography. Learning Activity Give a definition for the term chromatography. Using the term “soluble”, explain how different chemicals separate using chromatography. Arrange the following chemicals in order of how high they will rise up the filter paper, when doing chromotagraphy. Chemical 1: Extremely soluble Chemical 2: Insoluble in solvent Chemical 3: A little bit soluble in solvent
Chromatography Lv4: Describe the term chromatography. Lv5: Explain how to chromatography works using solubility. Lv6: Investigate the substances in different coloured pens. Entrance Activity Complete the key word match up activity handout on your desks. Key Terms Chromatography Separation Solubility Soluble Mobile
Chromatography Experiment Learning Activity Chromatography Experiment Carry out the chromatography experiment using the instruction worksheet provided!
Chromatography Extension Activity If time is available before the plenary, complete the summary extension task on chromatography.
Chromatography Lv4: Describe the term chromatography. Lv5: Explain how to chromatography works using solubility. Lv6: Investigate the substances in different coloured pens. Entrance Activity Complete the key word match up activity handout on your desks. Key Terms Chromatography Separation Solubility Soluble Mobile
Plenary Which dyes from 1-6 does the mix contain? Spots of ink before chromatography After chromatography 1 2 3 4 5 6 Mix 1 2 3 4 5 6 Mix