Hand Warmer Experiment

Hand Warmer Experiment
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  • What should we do for our hand warmer prototype?
  • I'm not sure, let's discuss what we have down
  • I have 10cc of orbeez, 10cc of calcium chloride, and 5cc of iron
  • I have 0cc of orbeez, 15cc of calcium chloride,and 5cc of iron
  • I have 25cc of orbeez,15cc of calcium chloride, and 10cc of iron
  • I have 10cc of orbeez, 15 cc of calcium chloride, and 5cc of iron
  • That's ok there's always room for mistake in science
  • Our hand warmer didn't give us the chemical reaction we wanted!
  • Yeah we have to redesign because it wasn't very exothermic! We need to get our hand warmer like we got our thermal energy reaction from activity 9
  • For our prototype lets try 25cc of orbeez,15cc of calcium chloride, and 10cc of iron.
  • ok sounds better
  • Ok lets try 25cc of orbeez, 15cc of calcium chloride, and this time 25cc of iron
  • Hopefully we chose the conductor to increase 
  • There isn't enough thermal energy, we aren't getting the chemical reaction we need
  • It's ok we did good even though we only stayed at the lowest temp in our criteria
  • That's true. We tried our hardest  and we did meet the criteria.
  • yea just like the chemical batteries we made in activity 8
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