Lab: Investigating Chemical Reactions
Chemical reactions come in many types. In this lab you will examine 7 different reactions and use the information you collect to determine what products are being formed and categorize these reactions. This lab introduces the student to molecular, complete ionic and net ionic equations.


View theInvestigating Chemical Reactions power pointattached below. This will provide you with the necessary foundation for successfully completing the lab.

NOTES:

In Activity 3, replace Step 13 with the videoTesting for Hydrogen Gas. Record the observations based on the video test.

https://www.youtube.com/watch?v=1PLH4H7Mjl8

REPLACE Activity 7 with the videoBurning Iron Wool.

https://www.youtube.com/watch?v=TsnLmgWXw-E

Note:While you work on the lab,you are required to take certain images/photos of your labto document that you actually completed the lab yourself. Each photo should include anote card or a piece of paper with your name, the date you completed the experiment and your course section numberclearly visible.

Note Card Information:

My Name: Zack Aldawoody

Section Number:145454

Download the item:Investigating Chemical Reactions Lab
Report attached below. This is what you will submit for grading. You can type your results and insert your images into this document.

Introduction to Graphing Investigating Chemical Reactions Lab CHEMISTRY 111 Overview •Recognize various reaction types •Predict products from observations •Practice writing balanced chemical equations •Brief introduction to complete and net ionic equations Materials Needed •Printed materials and basic materials needed from the kit: • Printed Investigation Manual • Printed Lab Report • Safety goggles • Gloves • Apron Materials Needed Additional materials needed from the kit: • Limewater • #4 1-hole stopper • #00 1-hole stopper • Plastic tubing • Steel wool pad • 3 Rubber bands • Glass test tube (large) • Mini-spoon • Dry yeast • Wooden splints Materials Needed Additional materials needed from the Chemical Set in the kit: Set 1 • Hydrogen peroxide 3% • White vinegar (acetic acid) • Baking soda (NaHCO3) Set 2 • Hydrochloric Acid (1 M) • Magnesium Ribbon Materials Needed Additional materials needed from the Equipment Set in the kit: • 10-mL graduated Cylinder • 50-mL graduated Cylinder • 250-mL beaker • Test tube rack • Thermometer • Electronic Balance • 2 Pipets • Weighing boat • Candle • Glass test tube (small) • Polystyrene test tube • Forceps • Ruler Materials Needed Needed but not supplied with the kit: • Distilled (or filtered) water • Matches or lighter • Paper towel • Scissors • Small cup • Timer Prior to the Lab/Safety •Carefully review the entire Investigation Manual, including the Overview and Objectives, Background information, necessary materials, safety precautions, lab preparation and procedures for all activities, and the waste disposal and clean-up information. •Review balancing equations and reaction types for this lab, which are provided in the Investigation Manual, and refer back to them as needed throughout the lab. •Make sure your work area is clean and out of the reach of pets and children. •Put your PPE including safety goggles on, and be sure to leave them on for the entire experimental procedure. Special Safety Precautions •Magnesium metal is combustible (burns). Keep away from heat sources. •Vinegar and hydrogen peroxide cause skin and eye irritation. •Limewater, hydrogen peroxide, and hydrochloric acid are corrosive. Use near a sink that can be used as an eyewash or safety shower in case of accidental exposure with skin or eyes. •You will NOT be performing the flaming splint test in Activity 3, Step 13, but will observe a recording of the test. •You will NOT be performing Activity 7, but will observe a recording of the reaction. Preparation – Lab Tips •Before beginning an individual activity, READ through it and gather the materials you need for that Activity. •Review the information provided in the Investigation Manual as needed to address questions on the lab report. Preparation – Lab Tips •Be sure to use the correct Test Tubes needed for each procedure: • Activity 2 and 6: Large Glass Test Tube • Activity 3, 5, and 6: Small Glass Test Tube • Activity 6: Polystyrene (plastic) Test Tube Preparation – Lab Tips •Read through the three different ‘Tests for Gaseous Products’ on Page 5. •You will only perform the oxygen test and carbon dioxide test. •Do not attempt the Hydrogen Gas test. •Prepare the glowing splint by lighting it with a match or candle, let it burn for 5 to 10 seconds, then blow it out. Use immediately. Activity 1 – Lab Tips •Be sure to wear gloves as you handle the steel wool and as you squeeze the excess vinegar out. •Save the cup of vinegar for use in Activity 4. •Read the thermometer to the correct number of significant figures. Activity 3 – Lab Tips •Be cautious with the 1 M hydrochloric acid. • Wash off immediately if it comes in contact with the skin. • Once diluted, the HCl(aq) is much less hazardous. •Make sure to observe what happens to the magnesium strip. •DO NOT PERFORM STEPS 12 or 13. Instead, watch the Testing for Hydrogen Gas video to see the test performed on the gas resulting from this reaction. Activity 4 – Lab Tips •Use the acetic acid saved from Activity 1. •Be sure to cover the reaction cup in step 4. •Perform the glowing splint test and flaming splint test and record your observations. Activity 5 – Lab Tips •Hold the test tube above the candle flame at the end of the tube farthest from the flame. •Make observations on the sides of the test tube. •Be sure to SLOWLY add the acetic acid to the cup from Activity 4 to generate new gas. •In Step 6, only pour out the gas produced in the cup. Do this by tilting the cup - avoid pouring out any of the liquid. •The gas in the cup is the same as one of the gases produced during the combustion. Activity 7 – Lab Tips •Activity 7 has been replaced by the video, Burning Iron Wool. •As you watch the video, make observations about temperature as the reaction proceeds and the mass reading on the balance before and after the experiment. Summary– Lab Tips What to look for: ◦ Bubbling = Gas production ◦ Determine gas identity from splint tests • Solid formation from aqueous solutions (precipitate formation) • Color change for solutions or solids • Heat evolution (temperature increase) • Heat absorption (temperature decrease) • Light emission • Change in mass due to gain or loss of gaseous compounds Images/Photos As you complete this lab, please capture images of the following steps of the lab procedure to include in your submitted lab report. ◦ Image 1: Thermometer in Steel Wool (See Activity 1, Step 11) ◦ Image 2:Test tube with reacting H2O2(See Activity 2, Step 4) ◦ Image 3:Cup containing vinegar + baking soda reacting (See Activity 4, Step 5) ◦ Image 4:Test tube after holding over flame (See Activity 5, Step 3) ◦ Image 5:Test tube with Limewater after reaction with CO2(See Activity 6, Step 15) For each image you capture, include a card with your name, the appropriate date and section number written on it. This card must be visible in each image you submit with your lab report. Failure to include these images or the card with the image will result in a grade of zero for the submitted lab. Clean Up •Clean up any spills and dispose of the splints, weighing boat, and gloves as directed in the Disposal and Cleanup section of the Investigation Manual (see page 14). •Clean and dry all other equipment used. •Place your equipment and supplies back into their safe storage location until you need them again. •Clean and disinfect all surfaces used. •Thoroughly wash your hands. Investigating Chemical Reactions Lab Report Activities 17 Data Table (1 point) Complete the information below based on Data Table 1: Experimental Data and Observations in the Investigation manual. Activity Observations and Data 1. Synthesis reaction Click or tap here to enter text. 2. Decomposition reaction Click or tap here to enter text. 3. Single replacement reaction Click or tap here to enter text. 4. Double replacement reaction Click or tap here to enter text. 5. Combustion reaction Click or tap here to enter text. 6. Precipitation reaction Click or tap here to enter text. 7. Combustion reaction Click or tap here to enter text. Activity 1: Synthesis Reaction Follow-Up Questions (1 point) Answer the questions below when Activity 1 is complete. 1. Assuming the reaction was between iron and oxygen in the air and the product contain iron (III), write the balanced chemical equation including phase labels for the reaction. Click or tap here to enter text. 2. In Activity 1, Step 11, you were to take a picture of the iron and thermometer reading. Insert the picture below. Remember to include a card with your name, the correct date and the section number in each image. Activity 2: Decomposition Reaction Follow-Up Questions (1 point) Answer the questions below when Activity 2 is complete. 1. Write the balanced chemical equation for the reaction including phase labels. Click or tap here to enter text. 2. In Activity 2, Step 4, you were to take a picture of the hydrogen peroxide and yeast mixture. Insert the picture below. Remember to include a card with your name, the correct date and the section number in each image. Activity 3: Single-Replacement Reaction Follow-Up Questions (0.5 point) Answer the question below when Activity 3 is complete. 1. Write the balanced chemical equation, including phase labels, for the reaction. The single replacement reaction between magnesium and hydrochloric acid produces a diatomic gas. Refer to the “Standard Tests for Gaseous Products” on Page 5 of the Investigation Manual, then watch Testing for Hydrogen Gas (Time: 0:26, Description Available) to identify the diatomic gas produced. Click or tap here to enter text. Activity 4: Double-Replacement Reaction Follow-Up Questions (1.5 points) Answer the questions below when Activity 4 is complete. 1. Write the balanced chemical equation for the reaction, including phase labels. The double replacement reaction produces an aqueous salt, water, and a gas. Consider the result of the test done in Activity 4, Step 8 to identify the gas produced. Click or tap here to enter text. 2. Write the balanced complete ionic equation for the reaction. Click or tap here to enter text. 3. Write the balanced net ionic equation for the reaction. Click or tap here to enter text. 4. In Activity 4, Step 5, you were to take a picture of the hydrogen peroxide and yeast mixture. Insert the picture below. Remember to include a card with your name, the correct date and the section number in each image. Activity 5: Combustion Reaction Follow-Up Questions (1 point) Answer the questions below when Activity 5 is complete. 1. One of the typical components of candle wax has the formula C35H72. Write the balanced chemical equation for the reaction, including phase labels. The combustion reaction produces TWO gases. One of the product gases condenses to a liquid when it comes in contact with the room temperature test tube held above the flame. The second of the product gases is the same as the gas poured over the flame from the vinegar + baking soda mixture. Click or tap here to enter text. 2. In Activity 5, Step 3, you were to take a picture of the gases collected in the test tube. Insert the picture below. Remember to include a card with your name, the correct date and the section number in each image. Activity 6: Precipitation Reaction Follow-Up Questions (1.5 points) Answer the questions below when Activity 6 is complete. 1. Write the balanced chemical equation for the reaction of the gas (carbon dioxide) and limewater (calcium hydroxide), including phase labels, in Activity 6. Click or tap here to enter text. 2