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assignment thing
Updated: 9/30/2020
assignment thing
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Storyboard Text

  • Have you ever wondered why your milk goes sour? Well, that's a chemical change!
  • Who the heck are you? And what the heck is a chemical change?
  • A chemical change. It occurs when two or more substances combine to form a new substance. For the most part, they tend to be irreversible except by further chemical reactions.
  • That's certainly helpful. But how do I identify these changes?
  • That's a good question and to answer it, we need to talk about chemical properties. Chemical properties are any of a material's properties that are present during or after a chemical reaction. This includes, but not limited to: flammability, reactivity, etc. You can identify changes by their chemical properties.
  • Eh, sure. Why not?
  • Could I have some examples?
  • Good question. The chemical bonds were broken and the atoms were rearranged to form a new substance; the baked brownies.
  • Right. So let's say you make brownies one day, you plop the batter into the oven and take it out later to have brownies! That's a chemical change!
  • That makes sense, but why did the batter turn into brownies?
  • Precisely! I think you got it!
  • Another example. You see that rusted car over there? Why do you think that car rusted?
  • The iron in the car came in contact with another substance, oxygen, causing an atomic reaction that resulted in the car getting rusted?
  • Aw come on, did he seriously just disappear? Oh well.. But at least now I know what chemical properties, changes, and reactions are..
  • Hey thanks— Wait... where did that old guy go?
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