LARN 021 C6D1

Start the following in class:

1.  The required journal topics for today, J21, are:

a. What is the difference between a physical change and a chemical change?

b. Contrast the range of proportions of substances that can be incorporated into a mixture to the range of proportions of substances that can be incorporated into a compound.

c. Contrast the change in the energy when a coarse mixture is produced to the expected change in the energy when substances react to form a compound.

d.  Contrast how the properties of a coarse mixture differ from the properties of substances that make it up, and also contrast how the properties of the compound differ from the properties of the elements that reacted to produce it.

e.  Contrast the ways a mixture might be separated into its components to the ways a compound might be separated.

2. Do all the pages in the chapter 2 Section Review packet as a formative assessment to find out some of the things that you do and do not know, and not as a research project.

  • If you did not obtain a section review packet for the chapter in class, go to MNSD Google Drive > Student Resources > Section Reviews and print off a section review for each individual section of the chapter.
  • The section review packet for each chapter contains a separate section review document for each section of the chapter.  So for example, a chapter with four sections would have four separate section review documents that need to be printed off.  Each section review question document is identified by a name whose last two digits or last three digits represent the chapter number followed by the section number of that particular section.
  • For each question or problem challenge, either answer the question to the best of your ability using one or more full sentences, or answer the problem to the best of your ability by recording any numbers and units together with the mathematical operations performed in symbolic terms, along with the solution to the problem which should be circled.
  • This is an important assignment. Be sure to finish this packet in its entirety.
  • After doing the section review packet, but before you demonstrate your understanding on our class’ chapter test, you will check all your responses using green ink check marks √ for each correct response, and by lining out (striking trough) and inserting improved text in green ink when you think the suggested response expresses your present understanding in a better way.   Then, when you know what you didn’t understand, you will be able to study more efficiently by studying that which you corrected in green ink.

Recommended for those who have time left in their 45 minute study period, but not required of all:

1.  Continue to study the meanings of the words on both the chapter 1 and chapter 2 vocabulary lists. Place a – symbol in front of each word that you have to study more, and a change the- to a + symbol in front when you have demonstrated mastery over the word to a study buddy, parent, or friend. Bring your studied and marked up lists to class every day.

2.  There is a description of the method of separating mixtures of substances that are dissolved in a solvent at the link entitled What is liquid chromatography?  Formulate a question to be answered in your Learning Log after previewing the reading selection.  Then read the selection and record your response to the question.   Study Figure 1 which shows the way the experimental apparatus was arranged, and then examine Figure 2 that shows the graphical readout from an electronic detector that shows the amount of various substances arriving at the detector at different times.  Then answer the six questions on the second page of the handout in full sentences in your Learning Log.  Keep your thinking train rolling on; don’t let anything stop you or discourage you!  Ask for clarification when you get to class, if necessary.