The “Like-Dissolves-Like” Principle

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Presentation transcript:

The “Like-Dissolves-Like” Principle Unit 8, Lesson 3 The “Like-Dissolves-Like” Principle

Like Dissolves Like Polar or ionic solutes tend to dissolve in polar solvents. Non-polar solutes tend to dissolve in non-polar solvents.

For example...

Real-Life Examples Sharpies Paint thinner Milk relieving the feeling of spicy foods Making coffee Soap 10 min

Brain Break!

Polarity Party! BeCl2, BF3, C2H4, CCl4, CH3Br, CH3Cl, CH3COOH, CH4, CHCl3, CO2, GeH4, H2, H2S, HCl, HF, HI, I2, N2, NH3, O2, O3, OF2, PCl3, SCl2, SeCl2, SF6, SiH4, SnH4, SO2 Draw the Lewis structure for your compound. Don’t forget that lone pairs of electrons take up space! Now it’s time to mix and mingle! Need: nametag stickers or labels. Play “mingle, mingle” and have students form groups according to like-dissolves-like. – 20 min

Homework Complete the “Like Dissolves Like” worksheet. Due tomorrow! 5 min