Chemistry Assignments

Assignment:Properties
i will send the images separately
Record your answers in thetemplateprovided and submit them to theAssignment:Propertieslink for grading.For more information on how this will be graded please view thegrading rubric.
Journal:Seltzer 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 tabletsjust look for the ingredients sodium bicarbonate and citric acid.
Write down your observations and answers to these questions in yourjournaland submit to theJournal:Seltzer in Waterassignment link for grading.For more information on how this assignment will be graded please view thejournal rubric.
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
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Time Requirements:approximately one hour
Procedures:
Follow thelab instructionsto perform the laboratory investigations.As you perform your experiment record everything in thislab instruction sheet.
Use the checklist to make sure all parts of the lab are complete.
After you have completed this laboratory you will be able to:
Lab:Chemical and Physical Changes
Congratulations on completing this lab!In this lab you learned about:
Now it is time to turn in yourlab instruction sheet.Make sure you have filled in all the relevant information and answered all the post-lab questions.Submit your lab report to theLab:Chemical and Physical Changesassignment link for grading.For more information on how this assignment will be graded view theLab Rubric.
Exploratory Activity:Chromatography
Materials: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.Lets see how forensic scientists would test a pen.You will need only a few simple household materials.
Procedure:
Answer these questions in the exploratory activity worksheet and submit your worksheet to theExploratory Activity:Chromatographyassignment link for grading.For more information on how this assignment will be graded please view therubric.
Lab Introduction
Youve 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?Youve 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 Objectives
After you have completed this laboratory you will be able to:
Time Requirements:approximately 1.5 hour
Procedures:
Follow thelab instructionsto perform the laboratory investigations.As you perform your experiment record everything in thislab instruction sheet.
Use the checklist to make sure all parts of the lab are complete.