In this lab students will conduct an investigation to find out if …
In this lab students will conduct an investigation to find out if substance either lose or gain mass after a chemical reaction takes place. Students will combine (and measure the mass of) 200 ml of water with a measured mass of antacid. They will add these two masses together BEFORE combining them. Students will then combine the two substances together in a capped bottle and record observations. Students will wait for the reaction to finish, then measure mass of the system. Students will then answer lab questions, and balance the chemical equation for this reaction.
In this lesson, students will demonstrate that mass is conserved when substances …
In this lesson, students will demonstrate that mass is conserved when substances undergo chemical and/or physical changes through experimentation and evaluation of experimentation procedures. Students will be able to analyze the demonstration and provide evidence for or against the law of conservation of mass.
This resource is a compilation of text and other elements that serves …
This resource is a compilation of text and other elements that serves as a multimedia learning experience for students. The resource reviews how chemical equations are symbolic representations of chemical reactions. Practice exercises involving balancing equations are provided.
This lesson is designed to exemplify a model-based inquiry approach to practical …
This lesson is designed to exemplify a model-based inquiry approach to practical work. Iron wool is placed on a simple balance and set alight. Will it gain or lose mass? Students use their own ideas (mental models) to make predictions about the outcome of the experiment. They compare their predictions with their observations, and then use the consensus model to develop an explanation. In this case the consensus model is made up of the equation for the reaction, and particle theory.
Students are introduced to molecules, atoms, chemical notation, and chemical compounds through …
Students are introduced to molecules, atoms, chemical notation, and chemical compounds through an engaging hands-on wet lab and LEGO brick models of atoms. Students will conduct a chemical reaction, compare physical and chemical changes, and then explore how matter is conserved during the reaction.
In this activity, students use pieces of candy to represent atoms in …
In this activity, students use pieces of candy to represent atoms in chemical equations, with different colors representing different atoms. Conservation of atoms in a chemical equation will be shown by having the same number and kinds of atoms on each side of the equation. One lab partner will use his/her candy to simulate the reactant (left) side of the equation, and the other partner will use his/her candy to simulate the product (right) side.
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