Chapter 6 Chemistry 8

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Chemistry 8 Lesson 41: Solubility of a substance in water

Chemistry 8 Lesson 41: Solubility of a substance in water 1. Theoretical Summary 1.1. Soluble and insoluble matter a) Test on the solubility of the substance – Experiment 1: Dissolve sand and salt in water Comment: Salt dissolves well in water, sand is insoluble in water. Conclusion: Some are soluble and some are insoluble in …

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Chemistry 8 Lesson 42: Solution concentration

Chemistry 8 Lesson 42: Solution concentration 1. Theoretical Summary 1.1. Percentage concentration of the solution a) Definition The percentage concentration (C%) of a solution tells us the number of grams of solute present in 100 grams of solution. The formula for calculating the percentage concentration of a solution: (C% = frac{{{m_{ct}}}}{{{m_{dd}}}}.100%)​ C% is the percentage …

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Chemistry 8 Lesson 43: Prepare solutions

Chemistry 8 Lesson 43: Prepare solutions 1. Theoretical Summary 1.1. How to prepare a solution according to a given concentration First of all, what is the solute and solvent? There are 2 types of preparation: – Prepare the solution according to the concentration – Prepare solution according to molarity Exercise 1: From CuSO . salt4, …

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Chemistry 8 Lesson 40: Solutions

Chemistry 8 Lesson 40: Solutions 1. Theoretical Summary 1.1. Solvent – Solvent – Solution a) Experiment 1: Dissolving sugar in water, we get a sugar water solution Comment: Sugar crystals dissolve in water to form a transparent solution that cannot be distinguished from sugar or water. Conclusion: + Solute: Sugar + Solvent: Water + Solution: …

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