Unit 6 - Solids, Liquids and Solutions
Use the Interactive Unit 6 Review and returned copies of benchmarks as a good indicator of what kinds of questions will be on the test.
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Solids and Liquids
- Students know the atoms and molecules in liquids move in a random pattern relative to one another because the intermolecular forces are too weak to hold the atoms or molecules in a solid form.
- Students know energy is released when a material condenses or freezes and is absorbed when a material evaporates or melts.
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Properties of Solutions
- Students know the definitions of solute and solvent.
- Students know how to describe the dissolving process at the molecular level by using the concept of random molecular motion.
- Students know temperature, pressure, and surface area affect the dissolving process.
- Students know the observable properties of salt solutions.
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Solution Concentration
- Students know how to calculate the concentration of a solute in terms of grams per liter, molarity, parts per million, and percent composition.
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Properties of Acids and Bases
- Students know the observable properties of acids and bases.
- Students know acids are hydrogen-ion-donating and bases are hydrogen-ion accepting substances.
- Students know strong acids and bases fully dissociate and weak acids and bases partially dissociate.
- Students know how to use the pH scale to characterize acid and base solutions.
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OUTSIDE THE STANDARDS
- Students know names and formulas for phosphoric, acetic, hydrochloric, nitric and sulfuric acids.
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