02/19/14 Classifying Chemical Reactions Introduction Pre-lab questions 1. Which reactants used in this experiment are flammable? Discuss the safety precautions that are necessary when working with flammable materials in the lab? 2. Summarize the following description of a chemical reaction in the form of a balanced chemical equation? 3. Common observations of a chemical reaction are
Copper in Silver Nitrate Lab: Making Silver Sabrina Kate S. Carranza – Chemistry Hour 6 I. Purpose: The purpose of this experiment is to distinguish the relationships between reactants and products, in addition to expanding on concepts such as single displacement reactions, mole ratio values, moles to mass, theoretical yields, limiting reactants, excess, stoichiometric relationships and percentage errors.
Komal Patel Chemistry Honors Period: 5 February 29, 2016 Chemical Reaction Lab Report Introduction A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?
to the unknown solution in order to completely precipitate the cations in part A. 2 A compound
Observations of Chemical Changes Purpose: The purpose of this experiment is to observe chemical changes in common consumer products to determine if the chemicals are basic, acidic, or remain neutral when mixed with other chemicals.
Qualitative Observation of a Chemical Reaction Purpose: Carefully observe and interpret a chemical reaction. Apparatus: Equipment- 250mL beaker, 125mL Erlenmeyer flask, cardboard square, chemical scoop, metric ruler, lab countertop, rubber stoppers, safety goggles, lab apron
Task 1: M1 Vacuum Filtration: Vacuum filtration is the method of separating a solid product from a liquid or solution mixture. The mixture is poured through a Buchner funnel containing filter paper. The filter paper holds the solid particles and the liquid draws through the funnel into the flask below. • In order to
Data tables: Substance name Color Odor Effect of heat Cold H2O Hot H2O Litmus Test Dilute HCl Dilute NaOH Mg Small silver, metallic, shards No smell Shriveled up and turned white. Produced gas insoluble Boiled fast, some sample floated to top Most notably the reaction with heat and hot and cold liquid were interesting. Several attempts were made to obtain a smell from the reactions but none were found. When the samples were heated in water several of them had violent and/or sudden reactions.
Food coloring + CH3COOH The color will be the same as the food coloring The color becomes to the food coloring color. Food coloring + NaOCl + CH3COOH It will have foam and the food coloring color. It has foam in the color of the food coloring. Red cabbage + NH3 It becomes green It becomes green and a little yellow. MgSO4 + NH3 The result will be a sediment It has a little precipitate. MgSO4 + Na2CO3 Nothing will happen It has a little white precipitate. B. Follow-Up Questions 1. What type of macroscopic evidence for chemical change did you observe during this experiment? Give at least three different examples.
AP Chemistry Curriculum Lesson Topic Main Idea Learning Objectives Session 1 Structure of Matter • Chemical elements make up matter, and these chemical elements are made up of atoms. A. To learn about the atomic structure and subatomic particles B. To learn about the trends of the properties of elements in the periodic table (periodic trends) C. To discuss different types
In this lab we were trying to make Maalox. Maalox is an antacid that used to reduce heartburn by raising the Ph of a person’s stomach. In the lab we mixed an acid that forms precipitate. When the two precipitate were mixed, they formed maalox. Fromt the lab I concluded
A few more important terms to keep in mind when doing a lab with chemical and physical changes are
this means the temperature in a reaction will go up or down. Visible changes can occur in the reaction mixture. These show that a reaction has taken place, for example a gad is given off or a solid is
Material matches, glassbeaker 100 mL, burner-fuel, goggles-Safety, stirring rod - Glass 1 test tube(5), 13 x 100 mm in bubble bag, test-tube-clamp-holder test-tube- cleaning-brush,well-Plate-24, well-plate, litmus paper, blue - in bag 2"x 3" 1 litmus paper, red - in bag 2"x 3", Copper (II) Carbonate in Vial, 1/2 Full
For this activity, students will be able to learn how water is a solvent by dissolving different substances, such as liquids and solids, into water. For this activity on solids and liquids will only be used, but gases can be dissolved in water, too. Some of the substances being used are: food color dyed water, oil, salt, sugar, flour, and coffee. In order to do this activity, the class will be split up into groups of four and will work together on this hands-on activity. It should take about fifteen minutes, but it could be shortened or lengthened. During the activity, the students will be filling out a worksheet that will show what substance(s) worked and did not work. There will also be follow-up questions to answer about the background information. By the end of the activity, the students will be educated on how and why water is the