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31 Cards in this Set
- Front
- Back
H20
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Water
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CO2
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Carbon Dioxide
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HCl
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Hydeochloric acid
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CH3COOH
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Acetic Acid Vinegar
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Pb(NO3)2
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Lead Nitrate
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HNO3
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Nitric Acid
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Na(OH)
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Sodium Hydroxide
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Heat energy on left side of equation
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endothermic
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what type of energy is found atoms and molecules?
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chemical energy
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Chemical energy is found in ______ and ______
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atoms and molecules
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energy must be absorbed in a chemical reaction so what can happen?
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Chemical bonds can break apart
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what happens during a chemical reaction
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Chemical bonds are formed and energy is released
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where does energy move in a exothermic reaction
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energy moves from the reactants to the surronding area
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what type of reaction would a bomb blowing up be?
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exothermic
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what happens during an endothermic reaction?
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energy is absorbed from the surronding area
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H2O2------> H2+O2
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decomposition
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CH4+2O2-------> CO2+2H2O
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Combustion
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Zn+2HCl------> ZnCl2+H2
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Single displacement
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The reactants switch partners
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double displacment
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two elements forming one compound
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synthesis
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how are chemical bonds broken?
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energy must be absorbed
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During a chemical reaction chemical bonds are formed. What is released?
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Energy is realased when bonds are formed
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what happens to atoms in a chemical reaction
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the atoms are rearranged, the atoms you started with are still there after the reaction and no atoms are created or destroyed
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If you had a piece of wood how could you create a chemical change? what happens to reactants? What happens to the mass?
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Light the wood on fire
The reactants produce/change into new products Mass always stays the same |
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pH scale
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a scale that determines how acidic a substance is
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litmus paper
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its an indicator that does not give specfic pH value, just detrimines whether a substance is acid or base (Red or Blue paper)
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phenolpthalein
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is an indicator that only detects basic solutions, does not give specific pH value. Turns hot pink in basic solutions, is clear and colorless in neutral or acidic solutions
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indicator
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indicates acids+bases and can give specific pH value (not always) Many different kinds. Helps you figure out pH range, specific pH and if its an acid or base
Ex: Red cabagge juice |
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neutralization
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A reaction where a strong acid and a strong base are mixed
water and salt always occur. When acids + bases become neutral at 7 on the pH scale |
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what happens when acid is dissolved in water?
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acid dissolving in water releases a H+ ion. Then H+ ions then bond w/ H2O molecules to form H30+ ions called hydronium ions
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what 3 things happen in a reaction involving acid and a base
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a. Neutrallize each other
b. production of salt and water c. acid realeases H+ ions, base releases OH- |