Daily EQ:What is a solution?

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Daily EQWhat is a solution?

• Warm-up 11/29/10
• Half-life- the time required for half of a
  substance to decay
• How many grams of a 50 g sample of
• Thorium 234 would remain after 20 days?
  (Half-life is 5 days)
• Bean Lab Due Wednesday 12/1

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11/29/10 Things to do today

• 1. Review purpose of Bean Lab. Any questions
  about graphs? Need graph paper? (due Wednesday)
• 3. Return quiz, any questions on quiz

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Notes

• Define the following
• solution-
• solvent-
• solute-
• solubility-
• solubility curve-

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Solubility curve 11/29/10
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Unit EQWhat is solubility?Daily EQWhat is a
solubility curve?

• Warm-up 12/3/10
• 1)What are the solutes in a can of soda?
• What is the solvent?

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More notes

• Define the following
• saturated-
• supersaturated-
• unsaturated-

hold the maximum amount of solute per solvent. On
the curve
hold more than maximum amount of solute per
solvent- above the curve
less than the max under the curve
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Ticket out the Door

• 1) How much potassium nitrate can dissolve in 100
  grams of water at 40oC ?
• b)How much sodium chloride can dissolve in 18
  grams of water at 55oC ?
• 3) Which has the lowest solubility at 0oC.
• NH3 KCl, NaNO3
• d) Which can make a more concentrated solution at
  15oC? NH4Cl or NaCl
• 5) If 30 grams of sodium nitrate dissolve in 50
  grams of water at 30oC, is the solution saturate,
  supersaturate or unsaturated? .
• f) How many grams of a 18 g sample of
• Thorium 234 would remain after 45 days?
  (Half-life is 5 days)

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Unit EQWhat is solubility?Daily EQWhat is a
solubility curve?

• Warm-up 10/28/09

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Unit EQWhat is solubility?Daily EQWhat is a
solubility curve?

• Warm-up 10/28/09
• How much potassium nitrate can dissolve in 100
  grams of water at 40oC ?
• How much sodium chloride can dissolve in 18 grams
  of water at 38oC ?