Messing With Mixtures Part A - The Science Spot printable pdf download

Messing With Mixtures Part A - The Science Spot

Messing With Mixtures

Name ___________________________

Part A: Hit The Trail!

(1) Look at the mixture in Bag A. What do you see?

(2) Would this mixture be classified as a heterogeneous or homogeneous mixture? Give a reason for your

answer.

(3) What is the total mass of your mixture? Be sure to subtract the mass of the ziploc bag. Record this amount

in the “Mass of Mixture” column of the chart.

(4) Separate the 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 chart.

Name

Mass (g)

Mass of Mixture (g)

% of Mixture

FORMULA

Mass of substance (g) ÷ Mass of mixture (g) x 100

Total =

Round final percentages to the nearest hundredth!

Part B: Tasty Solutions

(5) Read the steps below, then obtain 3 pieces of M&M 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

Piece of

Dissolving

(in seconds) it takes for the candy shell to dissolve.

Candy

Time (s)

Step 2: Place another piece of candy in your mouth and allow it

1st

to dissolve using only your tongue to move it around. Record the

time (in seconds) it takes for the candy shell to dissolve.

2nd

Step 3: Place another piece of candy in your mouth and allow it

3rd

to dissolve using your tongue and teeth. Record the time (in

seconds) it takes for the candy shell to dissolve.

(6) In your solution, what was the solute and the solvent?

Solute =__________ Solvent = __________

(7) Explain the results of your experiment in terms of dissolving rate or the time it takes for a substance to

dissolve.

Messing With Mixtures Part A - The Science Spot