Chemical and Physical Changes Lab In this activity third in a seriesstudents develop observation- and peer argumentation skills. They mix chemicals without any preconceptions of what may occur. This approximates the discovery process that Mendeleev and his precursors experienced discovering properties of the sixty-some elements that provided enough data from which to generalize a periodic law. From standard textbook definitions given by the instructor, they must create their own criteria to distinguish a physical change from a chemical change, but they must draw on observable evidence.
Get Full Essay Get access to this section to get all help you need with your essay and educational issues. Get Access Lab Report: Physical and Chemical Changes Essay Sample 1. Label 7 of the dishes with the names of the following products: Examine each sample with a magnifying glass and magnet and record your observations in the data table.
Put small samples of each substance in a test tube along with 3 mL of water to determine their solubility. Mix some of the Iron and Sulfur Lab report chemical change a clean disposable dish and examine the mixture with a magnifying glass and magnet.
Record your observations in the data table. Save and label this mixture. Mix some of the sand and Sodium Chloride on a clean disposable dish and examine the mixture with a magnifying glass and magnet.
Then, place this mixture in a clean mL beaker. Add 30 mL of tap water and stir. Prepare a filtration setup, filter, and record your observations.
Pour 10 mL of the filtrate into an evaporating dish, prepare a heating setup, and gently heat until all of the liquid is gone. Examine the residue in the evaporating dish and on the filter paper.
Using the crucible tongs, hold a dry piece of Magnesium ribbon in the flame. Quickly place the burning ribbon on the watch glass. Compare the appearance of the ribbon before and after burning.
Place the burnt remnants of the Magnesium into a clean test tube, and add 10 drops of Hydrochloric acid to it. Also, add 10 drops to the original Magnesium.
Feel the bottom of each tube. Put some sugar in a clean test tube and heat it. Watch for changes and periodically check for odors.
Scrape some of the sugar residue into a clean test tube and add 3 mL of water to test its solubility. Then add 5 drops of Hydrochloric acid to it and feel the bottom of the tube.
Add 5 drops of Hydrochloric acid to the test tube with the Sodium Bicarbonate dissolved in water.
Feel the bottom of the tube and note the collection on the sides. Place the sample of the Iron and Sulfur mixture into a clean test tube.
Heat it vigorously for several minutes. Submerge the hot test tube into water. Test it for magnetism. Physical Properties of Matter Substance Physical State Color Odor Solubility Magnetism Sulfur solid yellow none partially no Iron solid brown rusty metal yes yes Sodium Bicarbonate solid white none yes no Sodium Chloride solid white none yes no Sugar solid white sweet yes no Sand solid tan none partially no Magnetism solid silver metallic no no Data Table 2:Stazi Belvin Chemical and Physical Lab Changes Lab Report 9/5/ I.
Purpose- The overall purpose of the lab is to identify chemical and physical timberdesignmag.com Safety- To work with the chemicals used in the lab, it is required to wear safety goggles to protect your eyes from the fumes when working with the timberdesignmag.com is also required to be cautious when working with the acids used in this.
Chemical Change and Observation Lab Words | 7 Pages. Lab Report 2 Observations of Chemical Changes Objectives: (1 of 20 points) The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. Stazi Belvin Chemical and Physical Lab Changes Lab Report 9/5/ I.
Purpose- The overall purpose of the lab is to identify chemical and physical changes.
II. a- chemical change b- chemical change c- physical change d- chemical change e- physical change 2. Change in color, gas, light or smoke and heat.
Lab Report 1/28/13 Observations of Chemical Changes Page. 14 Objectives: The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. to associate chemical properties with household products Background Information: Chemical . Lab Report Chemical Change Essay Sample.
The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. to associate chemical properties with household products. Lab Report: Physical and Chemical Changes Essay Sample. 1. Label 7 of the dishes with the names of the following products: Sulfur, Iron, Sodium Bicarbonate, Sodium Chloride, Sugar, Sand, and Magnesium.
Place small samples of each in the appropriate dishes. 2.