Science Class 8
The Amazing World of Solutes, Solvents, and Solutions
A solute dissolves into a solvent. Every solvent has a limit. Density tells float from sink.
13 lessons · ~68 min total
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Lessons in this topic
- 0 Start here Solutes and solvents, how much dissolves, and density. · 3 min You are here
- 1 Three words for one glass A solution has a solute and a solvent. The state of each decides which is which. · 5 min
- 2 What water can dissolve Water dissolves many things, but not everything. Some need another solvent. · 5 min
- 3 How much will go in A solvent takes only so much solute. That limit is its solubility. · 5 min
- 4 Warmth moves the limit Warming usually raises the limit for a solid and lowers it for a gas. · 5 min
- 5 A glass at its limit A saturated solution holds all it can. Cooling it brings some solute back. · 5 min
- 6 How strong is it Concentration compares the solute with the amount of solution. · 5 min
- 7 Uniform or not A solution is a uniform mixture. In other mixtures the parts differ from place to place. · 5 min
- 8 Mass in each cm³ Density is mass divided by volume. A rise in water level gives the volume. · 7 min
- 9 Float or sink? An object floats if its density is less than the liquid. It sinks if it is more. · 7 min
- 10 Checkpoint: density A graded check on finding density and on floating and sinking. · 5 min
- 11 The big picture Nine ideas about what dissolves and what floats. · 4 min
- 12 Track quiz The nine rules from the labs, then questions on each idea. · 7 min
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