Crystals Lab Report

Coursework Equipment List • Boiling tubes (8) I will use these because this is where I will mix both the sodium carbonate and the strontium nitrate in order to form the precipitate. I need 8 because I am going to add 8 different amounts of strontium nitrate (1-8cm³) to the 8cm³of sodium carbonate. • Measuring cylinder (1) I will use this to measure the 8cm³ of sodium carbonate and the varying amounts of strontium nitrate to put into the test tubes. • Sodium Carbonate (enough to fill 8 boiling tubes with 8cm³/64cm³)

Experiment 1: Materials: • Alka-Seltzer tablets • Empty and clean water or soda bottles (12 oz to 24 oz) • Balloons • Water • Clock • Stove top Procedure: 1. Pour a sufficient amount of water (about 16 oz) into a small pot and place on the stove at high heat. 2. Watch the clock and after 30 seconds take the water off the heat.

To do this we created proportions. We calculated that we need to put .25 mL of salt in 50 mL of water to create .5% salinity, 1.5 mL of salt in 50 mL of water to create 3% salinity, and 2.5 mL of salt

I heated up the mixture and waited for it to turn completely black. I stirred the mixture every two minutes and recorded the appearance of the liquid. After the first two minutes the liquid had a few black specks but appeared almost completely like it did before I started heating it up. After another two minutes the mixture appeared much darker but still blue with a couple more black specks in it. After another two minutes the liquid was a lot darker and appeared more black than blue.

In the lab “All That Glitters” the objective that was focused on during the lab was calculating the density, volume and mass of various substances. The method that was used in finding the volume of the samples is called the displacement method. This is a process where the volume of the water in the graduated cylinder is calculated before and after the sample is placed. In this lab, the goal of the experiment was to identify and come to consensus about what the unknown substance might be. For this experiment, the required materials were ten pre and post pennies, unknown sample, graduated cylinder, weigh boat, water, paper towels and a weighing scale.

Stir 2-3 times each day. Place the starter in a jar and cover with cheesecloth and place in the refrigerator. Do not cover the jar tightly. To use the starter, bring the desired amount to room temperature. To replenish the starter after using, stir 3/4 cup all-purpose flour, 3/4 cup water and 1 teaspoon of sugar into the remaining amount.

In the second portion of this experiment we will keep the temperature constant and divide the ½ tablet of Alka- Seltzer into 2 pieces ,3 pieces and an unbroken ½ tablet. It is my belief that Alka-Seltzer

Prove if the material in cup 6 is a metal, metalloid, or nonmetal, by using its appearance, color, state of matter, luster, conductivity, malleability, and how it reacts with HCL. Before beginning to test on the substance we observed its appearance, state of matter, luster, and color. The substance was very shiny, solid and hard, as well as silver. Then we put on safety goggles to start testing.

1. Combine the first five ingredients in a steel or ceramic bowl (you should not use glass or synthetic bowl). 2. Whisk the ingredients until smooth. 3.

Temperature is important, since above 250C° and below 50C virtually no crystallization occurs. Around 14°C is the optimum temperature for rapid crystallization, but also the presence of solid particles (e.g. pollen grains) and slow stirring result in quicker crystallization. Usually, slow crystallization produces bigger and more irregular crystals. During crystallization, water is freed.

You can use the materials on your trays. If a material is not there do not worry, I will hand it out shortly. Also, make sure you get a picture of your three whirligigs on an iPad because you and your group are going to make a Popplet at the end of the experiment. After your Popplet is created you will present it in front of the class.” (Everyone should know how to use the Poppet App because they have used it

The earliest lenses were made from polished crystal, often quartz. The process evolved over the years from crystal to glass spheres to eventually, glass lenses. Some lenses from ancient egypt date back much farther than those from the assyrian empire, but some theorists say that these early

Then drain the aqueous layer, add 5% of sodium bicarbonate to the organic layer to dry any excess aqueous mixture. Once that's complete then add 5 mL of sat. Sodium Chloride , transfer the organic layer with NaCl into a erlenmeyer flask. In the erlenmeyer flask add 2g of Na2SO4 and mix for 10-15 minutes. After mixing then put the mixture through distillation once distillation is completed record the boiling point and calculate percent yield, as well as a IR scan of

Solid #5 is silica sand based on the fact that it isn’t soluble in water. We also used our international observations(appearance) and agreed that it was a match. Even though the density of silica sand is 2.65g/cm3 and ours was 1.3g/ cm3 we agreed that we

Purchasing opals free in a shop is sufficiently troublesome in the event that you don't comprehend them however to purchase them online is an overwhelming errand. You are helpless before the sales representative and that is not generally to your greatest advantage. Yet, I can help with some guidance which will smooth the way. Normal or Synthetic?