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6th Sci Unit 2

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  • Name something that doesn't conduct heat well.
    Wood, plastic, etc.
  • The solute and solvent together make a ____________.
    solution
  • What is the melting point of ice?
    Above 0 degrees
  • In a chemical reaction, are the reactants at the start or the end?
    what you have at the start
  • What does dissolve mean?
    To mix evenly with another substance
  • Name something that conducts electricity.
    Metals, water, etc.
  • Does the solute dissolve in the solvent or does the solvent dissolve in the solute?
    the solute dissolves in the solvent
  • What are two ways to make a substance dissolve faster?
    Stir, heat it, add more solvent
  • Name a irreversible change.
    baking a cake, burning, etc.
  • Is dissolving a reversible change?
    Yes, it is.
  • Name a physical change.
    boiling, cutting, condensing, folding, etc.
  • What is the boiling point of water?
    100 degrees
  • What are the three states of matter?
    Solids, liquids, and gases
  • What is an electrical conductor?
    Something that allows electricity to flow
  • Name a reversible change.
    Boiling and condensing
  • What's the difference between boiling and evaporation?
    Boiling - all particles boil, evaporation - particles at the surface evaporate
  • In a chemical reaction, are the products at the start or the end?
    what you have at the end
  • We usually can't see or feel gases. Do they have mass?
    Yes, they do.
  • Name something that conducts heat well.
    Metals
  • What is one sign that a chemical reaction might have happened?
    a color change, a gas, heat, etc.
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