Messing With Mixtures

Names ______

Part A: Hit the Trail!

  1. Look at the mixture in the Bag A. What do you see? (list here)
  1. Would this mixture be classified as a heterogeneous or homogeneous mixture? Give a reason for you answer
  1. What is the total mass of the mixture? Be sure to subtract the mass of the Ziploc bag. Record this amount in the Mass of Mixture column in your data table
  1. Separate parts of the mixture and find the mass of each group. Use the formula provided to calculate the percentage for each part of the mixture. Record your data in the data table.

Part of Mixture / Mass (g) / Mass of Mixture (g) / % of Mixture
Formula  mass of substance ÷ mass of mixture x 100 = round answers to the nearest hundredth

Part B: Tasty Solutions

Read the steps below, and then obtain 3 pieces of candy from your teacher. You will need 3 pieces for each group member.

  • Step 1: Place one piece of candy in your mouth and allow it to dissolve without using your tongue or teeth to help! Record the time (seconds) it take for the candy shell to dissolve
  • Step 2: Place another piece of candy in your mouth and allow it to dissolve using only your tongue to move it around. Record the time (seconds) it take for the candy shell to dissolve

Piece of Candy / Time (s)
1st
2nd
3rd
  • Step 3: Place another piece of candy in your mouth and allow it to dissolve using both your tongue and teeth to help. Record the time (seconds) it take for the candy shell to dissolve

In your solution (your mouth and the candy) what was the solute and the solvent?

Solute ______

Solvent ______

  1. Identify the solute and solvent in each solution. Underline the solute and circle the solvent. Remember a Solute dissolves in a Solvent!

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  1. Ocean water – salt and water
  1. Antifreeze –water and ethylene glycol
  1. Soda – syrup, water and carbon dioxide gas
  1. Gold jewelry – gold and copper
  1. Kool-Aid – powder, sugar and water
  1. Lemonade – water, lemon juice and sugar
  1. Air – nitrogen, oxygen and other gases
  1. Sterling silver – silver and copper

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  1. What liquid is called the “universal solvent” (can dissolve everything)?
  1. Which would have the most SOLUTE: A glass of very sweet Kool-Aid or a glass of barely sweet ice tea? Give a reason for your answer.

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