Iran vs. India Essay

Submitted By meliCgig
Words: 707
Pages: 3

Melina Collado
Block 1

Chemical Change!

Materials; Aluminum wire, 12 cm beaker, 100 mL Bunsen burner and related equipment copper (2) nitrate, 1.0 M plastic stirring rod gloves Hydrochloric Acid 1.0 M lab apron lab marker Sodium hydroxide 1.0 M ruler safety goggles test tube, 13mm x 100mm test-tube rack wire gauze, ceramic -centered

Purpose: The purpose of this lab is to observe what happens in a chemical change. This lab will help us see he many different things that can result when mixing a variety of chemicals together. This helps up learn to really follow directions because there are many types of chemical and if you go in the wrong order or even forget to put a chemical the results can change. The results can be a simple color change but it can go from that to possible explosion.
This lab definitely ties into how you can tell there is a chemical reaction which we have learned in the past lesson. Some of the ways you know there is a chemical reaction is if there is a temperature change, if there is precipitation, if there is a change in energy, also if there is a change in appearance.
Procedure:Make observation for every step! Put your safety goggles on and your lab apron. Place 50 mL of water in the 100 mL beaker and heat it until boiling. This will be the water bath you will use in step 6. While the water bath is heating, use the lab marker and the ruler to make three marks on the test tube that are 1cm apart. Make the marks starting at the bottom of the test tube and moving toward the top. Add 1.0 M copper (2) nitrate to the first mark on the test tube as shown in figure 1. Add 1.0 M sodium hydroxide up to the second mark on the test tube, as shown in figure 2. being careful of the substance. Mix the solutions with the stirring rod. Rinse the stirring rod thoroughly before setting it down on the lab table. Touch the bottom of the outside of the test tube to see If there is any evergy released. Put the test tube into the water bath that was prepared in step two. Heat it until no more changes occur. The product of this is copper(2) oxide. Remove the test tube from the hot water bath and turn the burner off. Cool the test tube in room temperature water for to minutes. Add 1.0 M hydro acid to the third mark.
In this Lab there were many thing that I had observed. For example when I poured the copper…