Monday, January 23, 2017

Homework Number 3-10

Read page 233 on writing equations in your Blue Handbook.
Answer questions 24-26 on page 234.

You have a vocabulary quiz tomorrow.  Please study all of the words.  Read them aloud.  If you do not know the definition by memory, do the following:
  1. Write the word.
  2. Say it aloud.
  3. Write the definition.
  4. Use the word in a sentence that shows you understand what the word means.
(I will give 5 points extra credit to anyone who hands in loose-leaf with at least three words that you practiced by doing numbers 3 and 4 listed above.)

Simple Definitions
Element: the smallest building  block of matter
Nucleus: the center of an atom (dense with a positive charge)
Proton: a positive particle in an atom
Electron: a negative particle in an atom
Neutron: a neutral (not positive or negative) particle in an atom
Isotope: one of two samples of an element that has the same number of protons but a different number of neutrons
Atomic number: an element’s number on the periodic table; the number of protons it has
Atomic weight: the number of protons plus neutrons in an atom (the average of its isotopes)
Period: a row on the Periodic Table
Group: a column (up and down) on the Periodic Table
Metalloid: an element that has characteristics of metals and nonmetals
Metal: an element that is usually hard and shiny; it conducts heat and electricity
Nonmetal: an element that does not have characteristics of a metal (see above)
Substance: an object that is the same all the way through
Compound: a substance with a “smallest part” that is made up of more than one atom
Mixture: two or more substances that are mixed together but do not form a new substance
Homogenous mixture: a mixture that looks the same all the way through
Heterogeneous mixture: a mixture that does not look the same all the way through
Solution: solvent + solute; another way of saying homogeneous mixture
Solute: the material that dissolves (disappears) into the solute
Solvent: the material that the solute disappears into (usually the solvent is water)
Concentration: how strong a solution is
Saturation: a solution that will not take any more solute
Covalent bonds: bonds that share electrons
Ionic bonds: bonds that form when one atom “steals” an electron from another atom
Aqueous: a solution where water is the solvent
Solubility: a measurement of how much solute can dissolve in a solvent
Dilute: a weak solution (usually a lot of solvent and a little bit of solute)

This graph presents the solubility of two compounds in water at different temperatures.  Use the graph to answer the following questions.
1. What is being measured along the y axis?  The x axis?
2. At what temperature is the same amount of each compound dissolved?
3. Describe the solubility trend of each compound.
4. Are these two solutions aqueous?  Explain your answer.
5. Explain what the red and blue lines represent on the graph.
link to solubility graph

Complete pages 11-18 in the Ready Workbook.  (due tomorrow)
Finish reading Monster.  Summarize the resolution in one paragraph in your notebook.

Social Studies
Reread pages 250-253 in your textbook.  Answer questions 1 and 3 (all letters) on page 253.

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