Figure 1 Standard tests for 3 common gases. Carbon Dioxide Gas Insert a flaming splint into the container. Reaction six will have a double replacement, and reaction seven will have a decomposition reaction. Hypothesis In the first reaction, light is produced from the burning of compound and an oxygen. Balance the equation using coefficients don't ever change the subscript of an atom to try and balance the equation! Heating solid nickel chloride dehydrate yields solid nickel chloride and water vapor. Include heat as a reactant or product.
Write a balanced chemical equation for each reaction 1-8. Litmus paper turned bright blue, brownish gas formed when fire added. Follow all local and state recommendations for chemical disposal. Sodium metal reacts with water to give sodium hydroxide solution and hydrogen gas. This reaction occurs in your car's engine if you use gasoline that contains ethanol. Loud pop when fire added as well.
If the flame is extinguished, the test is positive. Reaction eight was also correctly named as a combustion reaction. Each lab group requires the following items to perform all the activities. When fire put in, thick white fog formed and flowed out, then downward. The yeast contains the enzyme catalase that decomposes hydrogen peroxide. What gas or gases could be produced? Count the atoms of each element on both sides of the equation.
Change word equation to a skeleton equation making sure that all formulas are correctly written. The vinegar strips away the coating on the steel filaments, which are 96 to 98% iron. Safety Note: Use and be cautious with the burning splints and Bunsen burner. Is the test positive for oxygen see Fig. The fourth and fifth reactions will both have single replacement reactions. Acetic acid and lithium hydroxide solution produce water and aqueous lithium acetate. The second reaction will either be a single or double replacement, depending on the activity of the elements.
Therefore it will be a combustion reaction. Mixing ammonium nitrate and sodium hydroxide solutions gives aqueous sodium nitrate, ammonia gas and water. Hydrochloric acid heated when metal was added. . For reaction eight, with a compound and the presence of oxygen atoms, a combustion reaction is most likely to occur. Is the test positive for hydrogen see Fig. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
Classifying chemical reactions helps chemists to predict the possible products that will form when two or more substances are mixed. The third reaction was incorrectly named a double replacement reaction. Materials This activity is based on This kit comes with the materials to perform the reactions described below and more. Write a balanced chemical equation for each reaction and classify the reaction. Predicting Products Of Chemical Reactions Worksheet Answers Lovely Classifying Chemical Reactions Worksheet Awesome Predicting from Predicting Products Of Chemical Reactions Worksheet Answers , source: grnwav. Do not touch the dish until 5 min after the flame extinguishes. Reaction six was a double replacement instead of decomposition, and reaction seven was correctly stated as a double replacement reaction.
Was there a temperature change? Then, they can share these examples with the class in a PowerPoint® presentation. You may want to set up the activities at stations and have student teams rotate through them. Hydrogen Gas Insert a flaming splint into the container held at a 45° angle. Sulfur dioxide gas reacts with oxygen on a platinum catalyst surface to produce sulfur trioxide gas. The second reaction was more specifically a single replacement reaction, because one element was replaced in its compound by a more active element. Oxygen Gas Insert a glowing splint into the container.
When fire added to tube thick gas formed and gassed out of tube. Writing and is an essential skill for chemistry students, who must learn to predict the products of a reaction when given only the reactants. For reaction 1, because it was a compound burning in the presence of oxygen, it was correctly named a combustion reaction. Heating solid potassium chlorate in the presence of manganese dioxide catalyst produces potassium chloride and oxygen gas. If there is a small explosion or barking sound, the test is positive. Classify each reaction using the information provided in the Background section. Results Reaction Appearance of Reactant s , Evidence of Chemical Reaction and Properties of Product s 1 Manganese black and thin.
If so, print the instructions onto a card for each station. Everything eventually evaporated out of test tube. When held over fire, burned bright white, light and heat emitted and final product was white oxidized. Conclusion The hypothesis of this experiment was partially correct. It was really a decomposition reaction because it was a one compound splitting into smaller compounds or single elements. Aluminum metal and sulfuric acid yield aqueous aluminum sulfate and hydrogen gas. This becomes much easier for students to do when they learn the pattern of 5 basic categories of chemical reactions: synthesis, decomposition, single replacement, double replacement, and combustion.