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Science Review of Compounds 150 150 Deborah

Science Review of Compounds

Overview Chemical elements are often found within chemical compounds, in which one or more elements are bonded together.  Some elements exist freely in compounds with one another, while others are bonded by electrostatic charges and still others are bonded with molecular bonds. Molecules A molecule is the smallest uncharged unit of a compound, containing at…

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Science Review of Hydrogen Isotopes 150 150 Deborah

Science Review of Hydrogen Isotopes

Overview The element hydrogen is the lightest of all elements in the periodic table, with one proton in its nucleus. It is also the most abundant element in the universe.  Hydrogen has 3 naturally occurring isotopes, although others have been produced experimentally. Hydrogen The most common form of hydrogen has one proton in its nucleus…

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Math Review of Adding and Subtracting Polynomials 150 150 Deborah

Math Review of Adding and Subtracting Polynomials

Overview Adding and subtracting polynomials is similar to adding and subtracting other expressions.  Terms can be combined using the Commutative and Associative properties for addition, then like terms can be added or subtracted as needed. Find Like Terms Recall that like terms have the same variables and are at the same degree.  If they have…

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Math Review of Polynomials 150 150 Deborah

Math Review of Polynomials

Overview Polynomials contain variables, constants, and exponents.  The simplest polynomial is called a monomial, as a monomial consists of a single expression. Other polynomials are a sum of monomials. Monomials A monomial expression can consist of a constant, variable, and exponent, all multiplied together.  The variable is not in the denominator of the expression, such…

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English Review of Finding a Place to Write 150 150 Deborah

English Review of Finding a Place to Write

Overview One way to build good writing and studying habits is to find a good place to write and do homework.  Not all writing and homework can be done at school, so it is important to find a place without distractions, where students can go to the same place each day, keep necessary tools together,…

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English Review of Writing the Admissions Essay 150 150 Deborah

English Review of Writing the Admissions Essay

Overview Many selective colleges and universities ask prospective students to write an essay as part of their application for admissions.  Usually, there are guidelines, such as word length, a quotation, or a common question.  The goals of the essay are for the admissions officer to see how well students can express themselves in writing, and…

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Science Review of Deserts 150 150 Deborah

Science Review of Deserts

Overview Desert lands generally receive less than 10 inches of rainfall per year, and sometimes receive no rainfall in a year.  Desert climates may be hot or cold, and the topography may be flat or mountainous. Polar Desert The continent of Antarctica is considered a polar desert.  It receives less than 8 inches of rainfall…

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Science Review of Glaciers 150 150 Deborah

Science Review of Glaciers

Overview Glaciers form on land when the amount of snow falling in winter is greater than the amount that melts in the summer.  The compact snow and ice form sheets that flow under their own weight.  Those moving rivers of ice are especially found in mountainous areas and in the polar regions on Earth. Types…

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Math Review of Division of Exponents 150 150 Deborah

Math Review of Division of Exponents

Overview As division is the inverse of multiplication, so division of exponents is the inverse of multiplication of exponents.  There are properties for the division of exponents similar to the properties for the multiplication of exponents. Quotient of Powers Recall that finding a product of powers with the same base is expressed by the rule…

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Math Review of Multiplication of Exponents 150 150 Deborah

Math Review of Multiplication of Exponents

Overview Exponents are used as a type of shorthand directing how many times that a base number is multiplied by itself. Exponential expressions are useful when working with very large or very small numbers, as in scientific notation.   Like other numbers and variables, exponential expressions can be multiplied following certain rules. Review of Simplifying Expressions…

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