Transcript Activity 3 Follow-up Analysis Questions 1. Based on your observations, how many substances do you think there are in the unidentified mixture? Explain. Answer should.

Activity 3
Follow-up
Analysis Questions
1. Based on your observations, how many
substances do you think there are in the
unidentified mixture? Explain.
Answer should include number of liquids
(top layer and bottom layer) and solids
(black squares, red squares, red tubes,
dark grey and light grey rods). There
should be evidence that identifies items
based on color, consistency, or texture.
3.
What safety precautions would you take
when separating the mixture?
►
Must include:
the use of goggles and gloves
the use of tools to reduce contact with
the substance, such as droppers and
plastic forceps
Assume substances are toxic, corrosive,
or flammable
►
►
►
5. You are walking down the sidewalk and
see a puddle of green, oily liquid on the
ground. Can you identify the contents of
the puddle through observation alone?




No
Observations can give us information about
……..
Many things resemble each other such as…
An educated guess can be made
Activity 5
Title:
Separating the Mixture
Read pg. A-19
Problem: How can the substances in
the mixture be separated? What
are the liquids in the mixture?
Hypothesis/Initial Thoughts:
Procedure:
► Follow
group or class procedure from
Activity 3.
► DO NOT THROW ANYTHING AWAY!!!
► When you are finished, you should have
 One cup of solids
 Two cups of liquids
Chemical Data Safety Sheet
Data/Observation:
► You
will use this sheet for the next 2 weeks
► DO NOT fill in everything today!
► Today, describe the appearance and state
of matter (solid, liquid, or gas) of the
material.
► When you think you have it separated, ask
me to o.k. your group before you begin
clean up
Analysis:
Do analysis questions 2. Make sure
answers are complete and detailed
using information you may have
learned from this activity and from
previous activities.
Clean Up
1.
2.
3.
4.
5.
Recreate the unknown mixture
Wash & dry gloves and put them back in
the cabinet you got them from
In hot soapy water, wash the containers,
forceps and droppers
Put everything (clean and dry) back in your
red bin
Make sure the counter top in also oil free
and dry