Part of NCSSM CORE collection: This is the document for the conductivity titration of Ba(OH)2 with H2SO4.

Students write balanced equations for a series of word equations. Students will also indicate the type of reaction as described.

In this lesson, students will investigate the Law of Conservation of Matter using observation and data collecting and answering inquiry-based questions.

In this lab activity, students will investigate chemical changes that occur when acids and bases react. It is meant to introduce the concepts of chemical changes, mass of gases, conservation of mass, and balancing equations. Students will make qualitative observations and quantitative measurements.

In this tutorial students will learn how to identify the components of a chemical equation and how to balance chemical equations.

Students are introduced to the energy transformations involved in the burning of hydrocarbons.

Students will enhance their understanding of combustion using the reaction between dry yeast and hydrogen peroxide. The eperiment demonstrates that certain things are needed for combution - especially oxygen.

In this lab activity, students burn a magnesium strip to reinforce the concepts of chemical and physical changes, reaction types, conservation of mass, formulas and equations, stoichiometry, Lewis structures, and to explore the concept of oxidation/reduction reactions. Students will answer questions during the lab regarding their measurements and observations and also write a lab report to describe their findings.

In this lab activity, students will design an experiment to verify the law of conservation of mass.

In this lab activity, students observe the effects of temperature change on the color of nitrogen dioxide and dinitrogen tetroxide by manipulating glass tubes containing the gases at equilibrium. Students are then challenged to figure out how to impose the stress of temperature change on the gas tubes using a limited set of provided equipment. Students will also write a balanced equation for the reaction and correctly determine the color of nitrogen dioxide gas.

This lesson reviews how to determine empirical and molecular formulas based on experimental data and percent composition values. Ten practice problems are included. Two additional hands-on laboratory investigations are also included: "Empirical Formula of Magnesium Oxide," where students will heat magnesium ribbon in the presence of air to form magnesium oxide and water and use their data to calculate the mole ratio for magnesium and oxygen, and "Water of Hydration Lab," where students will determine the hydration number and empirical formula of copper(II) sulfate hydrate.

This demonstration should be performed by a teacher. Ribbon seaweeds (sp. laminaria) contain iodine compounds which they obtain by extracting iodide ions from seawater. In this demonstration seaweed is heated in the air to an ash. The iodide produced must then be oxidised to iodine and recovered by solvent extraction and evaporation.

In this lab activity, students examine and identify chemical equations and use a chemical reaction to create a rocket.

In this inquiry-based lab activity, students design an experimental process in order to recover lead (II) nitrate after it has been used in a reaction with potassium iodide by filtering the resulting precipitate.

In this activity, students work in groups to create a presentation that illustrates the meaning of the statement "To make an apple pie from scratch you must first invent the universe." Students pick an element that can be found in apple pie and trace its evolutionary history back to the birth of the universe itself. They also share their vision of the environment in which that element may find itself 5 or so billion years from now after the Earth is long gone. Presentations are intended to demonstrate student understanding of the origins and life cycle of matter, so this activity is appropriate as a conclusion to a unit. This activity is part of the "What is Your Cosmic Connection to the Elements" information and activity booklet. The booklet includes teacher notes, grading guide and student handouts.

In this lab activity, students will investigate limiting reagents and balanced chemical equations. They will add a fixed amount of baking soda and varying amounts of vinegar to several balloons and observe the resulting reactions.

In this lab activity, students identify unknown compounds using the results of precipitation reactions.

Students will investigate a reaction of a salt, copper(II) chloride and aluminum metal. They will use some concepts and skills already learned as well as developing their skills of observation, inference, and inquiry.