Unit 2 Lesson 2 Formative Forum
Since you completed your CHECKLIST for Unit 2 Lesson 2, you are ready to prove to one of the classmates an outcome that no one else has shown yet.
To receive full marks follow the following procedure:
a) Post a new forum and indicate which outcome (found in the bottom) you are showing that no one else has done yet. (1 mark)
b) Make up a question about this outcome (1 mark)
c) Show the detail solution with explanations of each step to obtain your final solution (5 marks)
You can submit this to the class either through any of the following format: video/text/paper & pencil.
d) Once you are done your post, you need to comment on another student in the class and observe if they completed the solution correctly and if it is correct the solution state this, but if it is not then correct their solution (3 marks).
- Recall the categories of pure substances and mixtures and explain the nature of homogeneous mixtures- Provide examples from living and nonliving systems that illustrate how dissolving substances in water is often a prerequisite for chemical change
- Explain dissolving as an endothermic or exothermic process with respect to the breaking and forming of bonds
- Differentiate between electrolytes and nonelectrolytes
- Express concentration in various ways; i.e., moles per litre of solution, percent by mass and parts per million
- Calculate, from empirical data, the concentration of solutions in moles per litre of solution and determine mass or volume from such concentrations
- Calculate the concentrations and/or volumes of diluted solutions and the quantities of a solution and water to use when diluting
- Use data and ionization/dissociation equations to calculate the concentration of ions in a solution
- Define solubility and identify related factors; i.e., temperature, pressure and miscibility
- Explain a saturated solution in terms of equilibrium; i.e., equal rates of dissolving and crystallization