LARN 124 C31D4

LARN 124 C31D4

Start the following in class:

1.a. Write your first journal entry on sheets of three holed 8.5 inch by 11 inch ruled paper. In the upper right corner white space of each upward facing page, write your hand in number within a circle followed by your name. Each journal entry should either be at least a paragraph of exemplary writing and penmanship concerning a single topic, or be a concept map relating chemistry terms. Begin each days paragraph with a topic sentence, follow with explained instances, and close with a focused summary statement.

As J124A copy the following chart and fill in  examples such as jelly, whipped cream, mayonnaise, egg white, fog, gelatin, smoke, marshmallows, blood, starch/water mixture for the different types of mixture listed.

Particle Size of Dispersed Medium:	General Classification	Continuous Phase/Medium	Dispersed Phase	Example 1:	Example 2:
< 1000  pm = < 1 nm	solution	gas	gas	filtered air	helium/oxygen mixture
< 1 nm	solution	liquid	miscible liquid
< 1 nm	solid solution	solid	solid
> 100 nm but < μm	foam	liquid	gas
> 100 nm but < μm	foam	solid	gas
> 100 nm but < μm	solid foam	solid	gas
> 100 nm but < μm	aerosol	gas	liquid
> 100 nm but < μm	solid aerosol	gas	solid
> 100 nm but < μm	sol	liquid	solid	paint
> 100 nm but < μm	emulsion	liquid	liquid	milk
> 100 nm but < μm	solid emulsion	solid	liquid	opal

1.b. For your second journal entry, J124B, read pages R44 and R45 on the properties,and sources of titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, cadmium, and gold found inGroups 4 through 12 (IVB through VIIB, VIII, IB and IIB) elements. In your learning journal record the answers to these three numbered questions:

1. What is the most interesting fact you read about?  Please make your answer to this question longer than one sentence.
2. What makes this so interesting to you?  Please make your answer to this question longer than one sentence.
3. What is one use for one of the aforementioned metals that you either were not familiar with or were least familiar with?

2.  Do all the pages in the Section Review packet for chapter 15, Water and Aqueous Systems 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 or if you have misplaced it, 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. So for example, chsr153.pdf stands for chapter section review for chapter 15, section 3.
• For each question or problem challenge for which a work space is given, 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 the numbers and units of measure of what is sought for, of what was given, and of what, if any, conversion or comparison ratios could be used to obtain a correct solution. Circle or box your final result after expressing your result to the proper number of significant figures, followed by the proper unit of measure.

After doing this formative assessment, but before you demonstrate your understanding on our class’ summative assessment, 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 have corrected in green ink.

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

1. Review the SI prefixes and their meanings until you can readily explain the meaning of each listed SI prefix as a numerical multiplier.

2. Think about the sixteen properties of covalent molecular substances listed on the Properties to be understood worksheet describing differences in the properties of metals, ionic compounds, covalent network solids, and covalent molecular compounds.  Continue to study this handout for understanding and review how the typical properties of members of these classes of compounds depend on whether the compound has localized or delocalized electrons, and upon whether strong metallic, ionic, or covalent bonding or weak van der Waals forces of attraction are predominant between representative particles of the substances.  Try to understand how each property of a given covalent molecular substance is related to the groups of covalently bonded atoms that form molecules whose van der Waals attractive forces only weakly attract other molecules.