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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Measures the potential difference between two electrodes
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Volt
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V |
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Measures power 1 J/s
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Watt
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What does a kilowatt hour measure?
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amount of energy equivalent to a power of 1 KW running for one hour
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What does an amp measure?
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electrical current. electric charge/second
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What is a fuel cell?
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A galvanic cell that produces electricity by converting the chemical energy of the fuel directly into electricity without burning the fuel
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What is the advantage of using H2 as a fuel?
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high energy content per gram
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What are disadvantages of using h2 as a fuel?
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only liquifies at -253 degrees C and takes up a large volume
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What is a covalent bond?
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bonds between two atoms that share electrons
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In a polar covalent bond, the atoms are displaced toward _______
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the more electronegative atom
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What is a conducting solute in an aqueous solution?
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an electrolyte
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gatorade |
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What is a cation?
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Positively charged ion
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+ |
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What is an anion?
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negatively charged ion
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- |
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What is a group of covalently bonded atoms bearing a positive or negative charge?
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polyatomic ion
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many |
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Hard water contains high concentrations of _______
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calcium and magnesium ions
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What are 4 disadvantages of hard water?
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bad taste
builds up deposits on pipes makes it difficult to produce soap lather soap scum |
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Acid or base?
Substance that releases H+ in aqueous solution |
Acid
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Acid or base?
Produces hydrozide ions OH- |
Base
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pH of pure water
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7.0
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normal rain water pH
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between 5 and 6
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Radiation 2+
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Alpha
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Radiation Beta charge
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1-
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Radiation Gamma charge
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0
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4He
2 |
Alpha
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0e
-1 |
beta
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Process where ionic compounds split into smaller molecules or ions
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dissociation
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Physical process of changing an atom by changing the number of protons and electrons
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ionization
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[H+]
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hydrogen ion
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[OH-]
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hydroxide ion
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[H+]x[OH-]
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1x10^-14
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