| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
|
The concentration of a solution can be measured in mol/dm3. |
|
(Chem only) What is mol/dm3 the unit of measurement for? Calculate the atom economy for simple examples.
Extended writing: write instructions to another student how to calculate the atom economy giving explained examples.
Identify a chemical reaction that has a high atom economy and research the positives to industry of producing a high yield of useful product.
Identify a chemical reaction that has a low atom economy and research the negatives to industry of producing a low yield of useful product and ways the reactions has been improved to increase the yield of useful product.
Atom Economy Video
https://www.youtube.com/watch?v=Zuyk4hfbjSA |
|
|
|
The amount in moles of solute or the mass in grams of solute in a given volume of solution can be calculated from its concentration in mol/dm3. |
|
(Chem only) How can we calculate the number of moles of solute in a given volume of a solution? |
|
|
|
If the volumes of two solutions that react completely are known and the concentration of one solution is known, the concentration of the other solution can be calculated. |
|
(Chem only) What technique can we use if the volumes of two solutions that react completely are known and the concentration of one solution is known, to calculate the concentration of the other solution. complete an acid-base titration to determine the concentration of an unknown solution:
http://www.rsc.org/learn-chemistry/resource/res00000697/titrating-sodium-hydroxide-with-hydrochloric-acid?cmpid=CMP00005972 |
|
|
|
Students should be able to explain how the concentration of a solution in mol/dm3 is related to the mass of the solute and the volume of the solution |
|
(Chem only) How can we calculate the mass of a solute within a solution if we know the concentration in mol/dm3? |
|
|
|
Opportunities within titrations including to determine concentrations of strong acids and alkalis. (WS) |
|
(Chem only) What is the difference between a strong and weak acid? |
|
|