# Lab 25 equation writing and predicting products of decomposition

With a flaming splint, carefully ignite the ethanol in the dish. Do not touch the dish until 5 min after the flame extinguishes. Combustion reaction What is the percent composition of methanol? Write a balanced equation for this decomposition reaction. Composition reaction Calculate the percent yield of the product.

For example, a metal with a higher activity will replace a metal with a lower activity in a single displacement reaction. Station 3 Write the balance equation for this reaction, including the state of matter for each reagent. If there is a small explosion or barking sound, the test is positive.

Complete and balance these 2 reactions: If you use a plain iron nail, here is the reaction: Place the test tube in the test tube rack.

What is the Law of Conservation of Mass, and how does it relate to chemical reactions? Lead Iodide is the precipitate. Predict the products that will result when these reactants combine and write a balanced chemical equation for each: Include heat as a reactant or product.

Single-replacement activity Hold the test tube containing 0. An activity series is a list of metals or halogens in order of decreasing reactivity. What is an activity series and how does it relate to chemical reactions? Record the final temperature of the steel wool: As a way to illustrate the relevance of synthesis and single-replacement reactions, have students research corrosion reactions e.

Decomposition reaction Calculate the mass of each product. Complete and balance the equation for this reaction: Describe any changes to the steel wool. Complete and balance the equation below for this reaction: Measure room temperature and record: This means that all chemical reactions must be properly balanced so there are the same number and type of each atom on each side of the reaction arrow.

Soak a steel wool pad in 30 mL of vinegar in a mL beaker. They are very similar with a difference of 0. Complete and balance this equation, and identify the gas with a flaming or glowing splint: Have students use a digital camera to document examples of the 5 types of chemical reactions in their local communities.

Write the balance equation for this reaction, including the state of matter for each reagent. Station 4 Write the balance equation for this reaction, including the state of matter for each reagent. The same is true for halogens.

Remove pad and squeeze the excess vinegar back into the beaker. Oxygen Gas Insert a glowing splint into the container.Classify each of the reactions as direct combination, decomposition, single replacement, or double replacement. (Classifying) Equation Writing and Predicting Products Prentice-Hali, Inc.

m Scale Name 4. A positive test for hydrogen was the "pop" test. lab pdf Author: scahill. equations – predicting by type of reaction Part I: Complete the word equation and write the balanced chemical equation. Give the reason for the product(s) in each case. Writing and balancing chemical equations is an essential skill for chemistry students, who must learn to predict the products of a reaction when given only the reactants.

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. 25, LC2HsOH C17H„COOH. Equations Name types are synthesis, decomposition, single replacement and double replacement.

they do occur, write the state of matter for the products, balance the equation and write the corresponding word equation beneath the balanced equation. If. -Writing equations-finish Intro to reactions Thurs 1/25 LAB: Activity Series of Metals Practice predicting products. Write the balance equation for this reaction, including the state of matter for each reagent.

2Mg(s) + O 2 (g)->2MgO(s) + energy Which type of reaction (of the 5 major types) is this?

Lab 25 equation writing and predicting products of decomposition
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