This document provides instructions for several assignments involving the analysis and separation of mixtures. It describes experiments using seltzer tablets in water, chromatography with markers, and separating iron from cereal. Students are asked to observe and record the physical and chemical changes that occur in each experiment. The goal is to learn techniques for separating mixture components and distinguishing between physical and chemical changes.

1. Assignment: Properties
Assignment: PropertiesAssignment: Propertiesi will send the images separately For each of
the objects list six physical properties of the object.Identify each property as extensive (E)
or intensive (I) and describe how you know it is an intensive or extensive physical
property.Then, select one property you identified for each object and describe, in detail,
how you would test that property.For example, if you determined that a metal rod is very
dense, how would you measure its density?Record your answers in the template provided
and submit them to the Assignment: Properties link for grading. For more information on
how this will be graded, please view the grading rubric. ORDER NOW FOR CUSTOMIZED,
PLAGIARISM-FREE PAPERSSection Warm-Up Journal: Seltzer in Water Assignment:
Properties[img alt=”A seltzer tablet in water.”
src=”http://static.k12.com/eli/bb/334/2_23579/1_124930_4_23583/634a35ff424938d28
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aasset_630661_1.jpg” title=”A seltzer tablet in water.”>In your house, grab a small cup of
water, some seltzer tablets, and a thermometer. Over-the-counter heartburn or cold
remedies will work for the seltzer tablets—just look for the ingredients, sodium
bicarbonate and citric acid.Before doing anything, write down some physical characteristics
of each substance (the water and the tablet).Then, take the temperature of the water.Now,
add the seltzer tablets to the water, leaving the thermometer in the water.Answer the
following questions in your journal:What happens?What does the final product look like?Is
it still water? How do you know?Did a physical change take place? How do you know? Was
there a temperature change during the event?Write down your observations and answers
to these questions in your journal and submit to the Journal: Seltzer in Water assignment
link for grading. For more information on how this assignment will be graded, please view
thejournal rubric. Lab Introduction Paper is an amazing material. Most paper is made from
the cellulose fiber obtained from trees or other woody plants. Unlike wood, you can fold
paper, tear it, or dissolve it in water. Each of these changes made to the paper is classified as
a physical change.Paper, like the wood it is made from, can also burn in the presence of
oxygen and enough heat– this is considered a chemical change. In this laboratory
experiment, you will observe the physical and chemical changes that a substance can
undergo Assignment: Properties. Lab Instructions Time Requirements: approximately one
hourProcedures:Follow the lab instructions to perform the laboratory investigations. As
you perform your experiment, record everything in this lab instruction sheet.Use the
checklist to make sure all parts of the lab are complete.Read through the lab

2. introduction.Complete the pre-lab questions.Read through the lab instructions completely
before setting up the materials for your experiment.Conduct the experiment.Complete the
calculations (if any) and answer the post-lab questions Lab Objectives After you have
completed this laboratory, you will be able to:Recognize the differences between chemical
and physical changes.Determine if a change is physical or chemical.Lab: Chemical and
Physical ChangesCongratulations on completing this lab! In this lab, you learned
about:Laboratory procedures to separate and combine chemicalsThe physical and chemical
properties of a substanceNow it is time to turn in your lab instruction sheet. Make sure you
have filled in all the relevant information and answered all the post-lab questions. Submit
your lab report to the Lab: Chemical and Physical Changes assignment link for grading. For
more information on how this assignment will be graded, view the Lab Rubric. Exploratory
Activity: Chromatography Assignment: PropertiesMaterials:Forensic scientists use
chromatography on ink pens to tell if a document was written with a specific pen. This can
provide direct evidence in many types of cases. For example, if a ransom note was found,
forensic scientists would analyze the ink using chromatography.If a suspect was found with
a pen that showed the same chromatography pattern, the forensic scientists would have
strong evidence to suggest that suspect wrote the ransom note. Let’s see how forensic
scientists would test a pen. You will need only a few simple household materials.Two coffee
filtersTwo different black markers (NOT permanent markers)SaucerWaterActivity
WorksheetProcedure:Using one of the black markers, place a dot in the center of the filter
paper.Place the filter paper on the saucer.Put a few small drops of water on the spot.Wait a
few minutes…what did you see?Now, using the other black marker and the other coffee
filter, repeat the procedure. What did you see this time?Many black inks are made up of
several dyes. Explain any differences you saw between the two markers.Did the
components of the inks separate differently?Are any of the component colors the same in
both of your markers?Answer these questions in the exploratory activity worksheet and
submit your worksheet to the Exploratory Activity:Chromatography assignment link for
grading. For more information on how this assignment will be graded, please view
the rubric.Lab IntroductionYou’ve just poured yourself the last bowlful of your favorite
breakfast cereal – Up & Atom. While working your way through the first few spoonfuls, you
discover, from the information on the box, that each bowl contains your complete daily
allowance of iron. Is there some way you can prove the cereal manufacturers
statement? You’ve already added milk to the cereal. How would you separate out this
mixture to measure the iron content? This lab will walk you through some of the processes
for separating mixtures. Lab ObjectivesAfter you have completed this laboratory, you will
be able to:Use physical properties to separate the components of a mixture.Use laboratory
techniques to separate the components of a mixture. Lab Instructions Time Requirements:
approximately 1.5 hour Assignment: PropertiesProcedures:Follow the lab instructions to
perform the laboratory investigations. As you perform your experiment, record everything
in this lab instruction sheet.Use the checklist to make sure all parts of the lab are
complete.Read through the lab introduction.Complete the pre-lab questions.Read through
the lab instructions completely before setting up the materials for your experiment.Conduct
the experiment.Complete the calculations (if any) and answer the post-lab questions