Sariah's Science Portfolio Lab Report

Modifications of this procedure include the use of hot plates instead of Bunsen burners, and heating t-butyl alcohol to 60-65 ℃ instead of 50 ℃. Other modifications include the use of weighing boats to measure an amount of unknown instead of weighing paper, and completing one run of unknown 2 instead of two runs of unknown 2. Summary of

Procedure and Observations To begin the lab, first all the correct equipment and materials had to be collected

3.06 Lab Guide Please use this as a guide in your investigation of the crime you read about for lab 3.06. Areas where you need to answer have been marked with either question/answer numbers or a table to fill out. PART I - Investigation Lab Journal: The Basics (Notes, rather than full sentences, are fine) 1. What do you see when you walk on the scene?

2) The glass beaker was placed in the freezer. 3) The temperature of the heavy whipping cream was checked with the thermometer every few minutes until its temperature reached 3˚C. 4) The heavy whipping cream, which was then at 3˚C, was transferred from the beaker to the container.

For our Capstone project we served dinner at the Russell and Ann Gerdin Hope Lodge in Iowa City on Tuesday August 4, 2015. We choose the Hope Lodge after discussing previous capstone class projects and our desire, as nurses, to do a project for adults with illnesses. We focused on adults as that is the population we all work with in our day to day careers. With Matt and Heidi working in the Clinical Cancer Center infusion suite the Hope Lodge dinner seemed an appropriate choice. We all pitched in to serve the residents a home cooked meal.

Then the scientist will observe the different rates of reaction with temperature. The Boltzmann distribution of law, indicates that high temperature makes molecules gain high energy contents (pubs.acs.org/doi/abs/10.1021/ja). In order to measure the reaction rate, the scientists must use the same volume of water at three different starting temperatures: hot tap

Second, I put water into the pot, and ice and dry ice into the plastic containers. Next, I put the water to boil and started putting a magnet in each container and pot, i left one magnet in room temperature. After, I got a plastic bowl and put 50 paper clips in it. Then, after 10 minutes had past I took each magnet out from each obstacle and put each magnet in the plastic bowl(full of paper clips)for 2 seconds.

1. 150 ml of boiled water was poured into each of the three beakers labeled A, B, C. 2. Five tea bags were soaked for the time given by the manufacturer (two minutes) , in beaker A (Control). The teabags were immediately removed after the time elapsed. 3.

Being, if hot and cold water were combined, then the cold water would move beneath the hot water because cold water is denser than hot water. Methods Materials: - Small glass bowl - Ice - Cold water - Food coloring - Spoon - Clear glass cup - Hot water - Clear medicine dropper Procedure: 1. First, in the glass bowl, mix the ice, cold water, and food coloring with the spoon 2. Next, fill the glass cup with hot water 3.

Put this mixture in the microwave and cook for about 1 to 2 minutes. Take it out and stir. Then, put it back in the microwave to cook for 60 more seconds. 6. Serve warm.

Pour 100 ml into each plastic cup, then one mixes with baking soda, another one with liquid soap. Remember to label on each cup “CO2” and “ soap ”. Show in Figure 1 & 2. Figure 1. Measure the water Figure 2.

II. METHODOLOGY In order to perform this experiment, the students will need a distillation set-up with a connector receiver, an iron ring and stand, a Bunsen burner, a wire gauze, a 250mL round bottom flask, a graduated cylinder, a thermometer, one or two boiling chips, an alcoholic beverage, masking tape, an ice bath, a stirring rod, and, optionally, food coloring. It is imporatnt to avoid playing with the apparatus and equipment so as to avoid breakage and injuries, especially since fire is being dealt with in this experiment.

Investigation of the effect of NaCl concentration on the evaporation rate of water. Chemistry HL Internal Assessment Vitaebella Tsang Ao Ling Contents page Contents page 2 Introduction 3 Design 4 Research question 4 Variables 4 Method 5 Results 6 Discussion 9 Evaluation 9 Bibliography 10 Introduction Many recipes call for salt to be added to the water when cooking pasta to add flavor, but there has been common belief or misunderstanding that adding salt will make the water boil faster. However, it is now known that that is not the fact, and that adding salt will do the opposite and make the water boil more slowly instead.

Place the the beaker onto a hot plate that is on a low heat setting (about setting 3). Every 5 minutes for 20 minutes, measure the circumference of the balloon and record it in Data Table A. You can measure the circumference of the balloon by looping a piece of string around it then using a ruler to measure the string’s length. Record the data in the data

➢ Select the flask, and then choose 50 mL of crude oil from the Chemicals menu. Then, by selecting the flask and choose “Chemical Properties” option from dropdown. NOTE: Record the grams of gasoline, kerosene, and lubricating oils that are present in the 50 mL of crude oil. ➢ Select the flask, and choose Heating Mantel option afterward select Max Heat and make sure you record the temperature when you see crude oil begins to boil. ➢ When the crude oil begins to boil, Make sure you turn the temperature down to 60% by decreasing the heating metal two times.