Friday, January 20, 2017

Homework Number 3-9 (01/20/2019)

Study for your test on Monday.

Copy the graph on page 309 of your textbook into your notebook.  Please use a ruler or other straight edge.  If possible, use a different color for each compound in the graph.

You have a vocabulary quiz on Tuesday.

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)

Explain what geographical features of New Orleans made Hurricane Katrina so damaging.  One paragraph, in your notebook.

Social Studies
Review the handout that we used in class (pages 60-64). Please bring these sheets with you tomorrow.  In your notebook, identify one foreign issue and one domestic issue from the 1790s and one foreign and domestic issue from today.

You will have a quiz on foreign and domestic issues next week.

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