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Science 24 Chapter 3 Review

Quiz by Joe Garreck

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15 questions
Show answers
  • Q1
    Words are used to indicate what changed during a chemical reaction
    Word Equation
    30s
  • Q2
    Two or more elements combined to form a compound. Element A + Element B --> Compound
    Simple Composition Reaction
    30s
  • Q3
    A compound is broken into Two or more elements. Compound --> Element A + Element B
    Simple Decomposition Reaction
    30s
  • Q4
    Standard scientific name by which each element or compound is known
    Chemical Name
    30s
  • Q5
    The compound is written as symbols and numbers only.
    Chemical formula
    30s
  • Q6
    The everyday names that are used for various compounds.
    Common Name
    30s
  • Q7
    dihydrogen oxide is commonly known as ____________________.
    water
    stomach acid
    jello
    air
    30s
  • Q8
    Matter is not created or destroyed. What goes in must come out.
    Law of Conservation of Mass
    30s
  • Q9
    Each side of the equation has the same elements and the same number of atoms of each
    Balanced Chemical Equation
    30s
  • Q10
    Is the chemical equation balanced? 2ClO --> Cl2 + 2O
    Yes
    No
    Under certain conditions
    30s
  • Q11
    An explosion occurs, causing heat, light, and sound to be released. Which of the following is the best description of the event?
    an exothermic combustion reaction occurred
    an exothermic neutralization reaction occurred
    an endothermic neutralization reaction occurred
    an endothermic combustion reaction occurred
    30s
  • Q12
    What is the correct way to name P5Cl3?
    phosphorus chloride
    pentaphophorus tetrachloride
    phosphorus trichloride
    pentaphosphorus trichloride
    30s
  • Q13
    How are word equations organized?
    the left side is products, and they are separated from reactants by an equal sign
    the left side is reactants, and they are separated from products by an arrow
    the left side is products, and they are separated from reactants by an arrow
    the left side is reactants, and they are separated from products by an equal sign
    30s
  • Q14
    Hydrogen reacts with Oxygen gas to make water. What is this an example of?
    a neutralization reaction
    a combustion reaction
    a simple composition reaction
    a simple decomposition reaction
    30s
  • Q15
    Reactions follow patterns. Studying these ____________ ____________, helps a chemist know what to expect.
    chemical reactions
    decomposing reactions
    simple reactions
    chemical formulas
    30s

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