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Chemical Reactions

Quiz by Debbie DeLucia

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9 questions
Show answers
  • Q1
    What is one way you can detect a chemical reaction?
    the substance evaporates
    the substance melts
    a substance dissolves and mixes well
    a gas is produced therefore you might see bubbles
    30s
  • Q2
    What is meant by a preciptate?
    it's a gas that forms from solutions during a chemical reaction
    it's a solid that forms from solutions during a chemical reaction
    it's all three states of matter that forms solutions during a chemical reaction
    it's a liquid that forms from solutions during a chemical reation
    30s
  • Q3
    What is the KEY characteristic of a chemical reaction?
    it changes state ONLY
    it melts at the end of the chemical reaction
    it evaporates at the end of the chemical reaction
    the production of new materials that are chemically different from the starting materials
    30s
  • Q4
    During a chemical reaction chemical bonds ....
    nothing happens it remains the same
    the mass of the increases
    chemical bonds are either formed or broken apart
    chemical bonds evaporate
    30s
  • Q5
    In a chemical equation, what is meant by a reactant?
    it's how many atoms in each element
    it's the materials you have at the beginning
    it's the materials you have at the end
    it's just a fancy way to write the chemical equation
    30s
  • Q6
    There are three main types of chemical reactions. Which one comines to make a more complex substance
    synthesis
    decomposition
    a double bond
    replacement
    30s
  • Q7
    What type of chemical reactions where one element replaces or trades places with another?
    replacement
    synthesis
    double
    decomposition
    30s
  • Q8
    What does the Law of Conservation of Mass state?
    During a chemical reaction the matter is conserved therefore the mass decreases
    The amount of matter in a chemical reaction does not change so the total mass is equal
    The amount of matter in a chemical reaction changes and the total mass increases
    The amount of matter in a chemical reaction is not equal to the total mass
    30s
  • Q9
    What is the product referred to in a chemical reaction?
    it's the different material that is formed during a chemical reaction
    it's referred to as a physical change
    it's the material at the beginning of the chemical reaction
    It's the arrow in between the chemical equations
    30s

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