Apple Fireworks Mystery Case Number: JW06-6022.1023.

Slides:

Advertisements

Similar presentations

Solubility rules: Answers to lab

Advertisements

Mining for Metals. Background Information Mining for minerals has been taking place for hundreds of years. Mining for minerals has been taking place for.

Chapter 9 Chemical Change

CLASSIFYING CHEMICAL REACTIONS

Types of Chemical Reactions

IIIIIIIVV Ch. 8 – Chemical Reactions III. Types of Chemical Reactions (p )

Chapter 11 Chemical Reactions

Stoichiometry and Reactions

Chemical Reactions.

Chemical Equations Preparation for College Chemistry Columbia University Department of Chemistry.

Precipitation Equilibria. Solubility Product Ionic compounds that we have learned are insoluble in water actually do dissolve a tiny amount. We can quantify.

Chapter 19 - Neutralization

General Properties of Aqueous Solution and Precipitation Reactions

IONS IN AQUEOUS SOLUTIONS AND COLLIGATIVE PROPERTIES.

Chemical Reactions What’s in the Bottles?. What’s in the Bottles Qualitative Analysis –Identification –Not quantitation –Volumes of reagents not critical.

C h e m i c a l R e a c t i o n s. C h e m i c a l R e a c t i o n A p r o c e s s i n w h i c h o n e s u b s t a n c e i s c h a n g e d i n t o a n.

Flame Test Virtual Lab Make-up Lab.

1 Solubility Equilibria Solubility Product Constant K sp for saturated solutions at equilibrium.

THIS IS THE TITLE OF MY POSTER. THIS IS THE TITLE OF MY POSTER NAMES, NAMES, & NAMES This is my abstract. This is my abstract. This is my abstract. This.

Applications of Aqueous Equilibria Chapter 8 Web-site:

Types of Chemical Reactions and Solution Stoichiometry

Solubility Equilibrium In saturated solutions dynamic equilibrium exists between undissolved solids and ionic species in solutions Solids continue to dissolve.

SCH3U Solutions and Solubility

Compounds Study Guide 6 th Grade. Correct Your Study Guide 1.What are the building blocks of elements? Atoms 2.What are the building blocks of compounds?

Qualitative Analysis Chemistry 12 AP.

Balancing Reactions.

1 Selective Precipitation  a solution containing several different cations can often be separated by addition of a reagent that will form an insoluble.

CHEMICAL REACTIONS CHAPTER 8 Evidence of a Chemical Rx 1. Color change 2. Formation of a gas 3. Heat produced or heat absorbed 4. Formation of a precipitate.

Chemical Reactions Chapter 11. How to Make a Cake 1. Add flour and eggs and milk, put in the oven for 20 minutes at 450 o F and you will have yourself.

1 Titration Curve of a Weak Base with a Strong Acid.

Acid-Base Equilibria and Solubility Equilibria Chapter 17 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

EQUATIONS Coefficients- 1. The big numbers in front of the compounds and/or elements in a chemical reaction. 2. Represent the number of moles of that compound.

Chemical Reactions Science, Technology, and Society Mr. CANOVA PERIOD 11.

Chemical Reactions Unit Learning Goal #1: Identify evidence of chemical reactions and differentiate between the different types of reactions.

Lab Session 9 This is a two-week experiment in which they will explore how to use chemical reactions to identify substances. How can we use chemical reactions.

Reaction Predictions ! !. Types of Chemical Reactions  Single Displacement  Double Displacement  Decomposition  Synthesis  Combustion.

Qualitative Analysis Determines only the presence (or absence) of a substance Sometimes referred to as “Wet Chemistry” Involves the identification of ions.

S O L U T I O N S SOLUTION: HOMOGENEOUS MIXTURE OF 2 OR MORE CHEMICAL SUBSTANCES SOLUBILITY: MAXIMUM AMOUNT OF SOLUTE THAT CAN BE DISSOLVED AT A GIVEN.

Qualitative Analysis Identifying Ions in Solution Qualitative Analysis Identifying Ions in Solution.

Aqueous Solutions.

9.1 Net Ionic Equations and Qualitative Analysis Learning Goals … … write an ionic and net ionic equation … use qualitative analysis (flame test, solution.

Chemistry XXI Lab Session 9 How can we use chemical reactions to identify substances? (Two-Week Experiment)

Chemistry XXI Lab Session 10 How can we use chemical reactions to identify substances? (Two-Week Experiment)

CHE1102, Chapter 17 Learn, 1 Chapter 17 Solubility and Simultaneous Equilibria.

Section 2: Chemical Reactions

An Atom is ……………. An Element is …………... A Compound is ………….

Chemical Reactions Quantitative Chem. Indicators of a Chemical Reaction.

FORENSIC SCIENCE Testing substances. Solubility of a compound.

Reactions in Aqueous Solution Chapter 9 Section 3.

Electrolytes Pre lab. Electrolytes: a quick review Electrolytes form ions in solution. Ions allow water to conduct electric current Three types of electrolytes:

Single Replacement Reactions  A single replacement reaction occurs when atoms of an element replace the atoms of a second element in a compound.  This.

Chapter 10 Chemical Reactions. Must Know Diatomic molecules – H 2 – N 2 – O 2 – F 2 – Cl 2 – Br 2 – I 2 Common Allotropes – P 4 – S 8.

Stoichiometry: Quantitative Information About Chemical Reactions Chapter 4.

YOU CAN ALSO BE AN ANALITYCAL CHEMIST Emilia Grygo-Szymanko Paweł Świt Jagiellonian University in Krakow Faculty of Chemistry Department of Analytical.

DOUBLE REPLACEMENT METATHESIS REACTIONS. The driving force: All double replacement reactions must have a “driving force” or reason why the reaction will.

POD 1)What is the pH of a M HCl solution? 2)What is the pOH of a M HCl solution? 3)What is the pH of a 6.50x 10-3M KOH solution? 4)A solution.

Classifying Chemical Reactions Chapter 9. Chemical Reaction - A process in which the physical and chemical properties of the original substances change.

Qualitative Analysis Chem 1106 Lab 19. QA Process of determining if a chemical is present or not NOT how much only the presence Changed form 5 to 3 anions.

Types of Reactions. Type of Reactions Chemical reactions are classified into four general types Synthesis (aka Combination) Decomposition Single Replacement.

Jeopardy Parts of Equations Balancing equations Predicting products

Elements, Compounds and Mixtures

Lab 2—Flame Test Introductions Purpose Materials Cautionary notes

Drill: 12/23 Identify the type of reaction that takes place.

Li+, Na+, K+, NH4+ (primary rule)

What indicates a chemical reaction has taken place?

Li+, Na+, K+, NH4+ (primary rule)

Chapter 11 Chemical Reactions 11.2 Types of Chemical Reactions

6.5 Types of Reactions Obj 3 Chemistry.

How will you “REACT”?! You and 1 partner

Presentation transcript:

Apple Fireworks Mystery Case Number: JW

The Facts… The Apple Fireworks Company (AFC) based out of Uranium, VA, is in the process of submitting a proposal for the 2007 Apple Blossom festival. While reviewing chemical inventory at AFC, several containers with chemicals used in the preparation of fireworks were found with no identification labels.

The Mission AFC has hired your company, the Wood Chemical Analysis Laboratory (W-CAL), to identify the chemicals present in the unlabeled containers. AFC has informed W-CAL that each of these containers is believed to contain a saturated nitrate solution. AFC uses the following metals in solution to prepare its fireworks: Cu, Pb, K, Ca, Ba, and Zn.

Wood Chemical Analysis Laboratory This lab can test for several substances, including metals. The lab only uses flame tests as a final confirmation. This lab uses several major chemicals in their examinations, including MgSO 4, Na 2 CrO 4, NaBr, NaOH, Na 2 CO 3, and HCl. Various combinations of these chemicals will yield positive test results for Cu, Pb, K, Ca, Ba, and Zn.

The Assignment As members of the Wood Chemical Analysis Laboratory, your job is to analyze samples taken from the firework containers and determine what metals were present in each of these containers.

Additional Information You will have available 0.1 M solutions of the following compounds to use in your analysis: MgSO 4, Na 2 CrO 4, NaBr, NaOH, Na 2 CO 3, and HCl. Other lab equipment will be available upon request, including pH sensors and conductivity probes.

Additional Information Employees will work in teams of 2 or 3. Each team of employees will be responsible for testing the six firework samples. A supervisor is available that may have additional information that may be of assistance in your investigation.

Your Conclusions Once your team has completed its investigation, you are to report your results with conclusive support for your decisions.

Your Report The following information is essential to your final report: - team members - sample container numbers - tests performed - results of tests - conclusions (these need to be supported with logical evidence)

Expected Results MgSO 4 Na 2 CrO 4 NaOHNa 2 CO 3 HClNaBr Ba 2+ xxxxx Ca 2+ xx x Cu 2+ xxx Zn 2+ xx Pb 2+ xxxxxx K+K+ xinsoluble xxslightly soluble soluble