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Investigation 6 : Melting and Dissolving. December 4-5. Warm Up. Ben and Jonah are making hot cocoa. They used 500 ml of milk. The temperature of the milk was 12 ˚C. After they heated it, the milk was 64 ˚C. How many calories of heat transferred to the milk?.

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Presentation Transcript
warm up
Warm Up
  • Ben and Jonah are making hot cocoa. They used 500 ml of milk. The temperature of the milk was 12 ˚C. After they heated it, the milk was 64 ˚C. How many calories of heat transferred to the milk?
write down complete answer for credit
Write down complete answer for credit.

Cal= m X ∆T

m= 500 ml=500g

∆T=64 ˚C -12 ˚C =52˚C

Cal= 500g x 52˚C = 26,000 cal

learning target
Learning Target

I can differentiate between melting and dissolving.

homework check
Homework Check
  • Open your notebook to page 97
  • We are going to correct the work.
  • This will be used as part of a notebook grade so write down all answers.
page 97 and 99
Page 97 and 99
  • One set of answers per table.
  • Everyone at the table must write all answers.
  • You must copy all the work, not just the final answer.
  • Raise your hand when finished.
champs
CHAMPS

C- Only at your group.

H-Raise your hand if you have a question.

A- Sitting up, working on answers.

M-None.

P- All students working on pages 97 and 99.

Success for all students!

dissolving and melting
Dissolving and Melting
  • How are dissolving and melting different?
  • How are they the same?
  • How would you melt a substance?
  • How would you dissolve a substance?
page 111
Page 111
  • You will work with a cup of hot water and cold water.
  • You will have 2 foil cups floating on the water.
  • You will have 4 M&Ms to use.
  • DO NOT SQUASH, EAT, THROW!!
  • Place one candy in each foil cup and one in the water.
  • Do not stir or touch the candy!
page 113
Page 113
  • Record all your observations.
  • Use a lot of details.
observations
Observations
  • What happened to the colored coating?
    • It dissolved in both hot and cold water and it stayed in place in the foil cups.
  • Where did the colored coating go?
    • In the water. It spread throughout the water.
observations1
Observations
  • What happened to the candies in the foil cups?
    • The one in the cup over hot water cracked and got soft and gooey. The one over cold did not change.
  • What happened to the chocolate in the water?
    • The one in hot water got soft and gooey, the one in cold water stayed hard.
melting and dissolving
Melting and Dissolving
  • Melting is when a solid material changes to liquid.
  • The change is caused by heat.
  • When the particles have enough KE, they start to move past one another as a liquid.
melting and dissolving1
Melting and Dissolving
  • Dissolving is when a solid substance is placed in a liquid and particles of the solid substance break away and move into the liquid.
  • A solution is made of particles of a substance mixed uniformly with particles of the liquid in which it is dissolved.
conclusions
Conclusions
  • Complete conclusions on page 113.
champs1
CHAMPS

C- None

H-Raise your hand

A- Sitting up, recording your answers

M-None

P- All students working on answering

Success for all students!

green textbook page 42
Green Textbook page 42
  • Read pages 42 to 48
  • Answer questions on page 119 in science notebook
exit slip
Exit slip
  • What are the 3 important ideas of energy transfer?
champs2
CHAMPS

C- Only with your group. Only on topic.

H- Check in book, notes, and ask your group members. Raise your hand if you have a question

A- Answering questions on page 87.

M- None

P- All students working on questions.

Success for all!!!

champs3
CHAMPS

C- None

H-Raise your hand if you have a question.

A- Sitting up, working on quiz

M-None

P- All students sitting quietly correcting quiz.

Success for all students!

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