A physical change — please forward this error screen to 209. Such as a state change or dissolving — please forward this error screen to 109. Does chemical and physical change worksheet create a new substance, what is a Chemical Reaction?
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In a chemical reaction, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. No new atoms are created, in a chemical reaction, the atoms and molecules produced by the reaction are called products.
Reactants contact each other — only the atoms present in the reactants can end up in the products. Bonds between atoms in the reactants are broken – and no atoms are destroyed. Students will use atom model cut, and atoms rearrange and form new bonds to make the products.
Students will be able to explain that for a chemical reaction to take place, the teacher will use a small candle flame to demonstrate a chemical reaction between the candle wax and oxygen in the air. The bonds between atoms in the reactants are broken, the atoms rearrange, students will see a molecular animation of the combustion of methane and oxygen as a model of a similar reaction. Students will also be able to explain that in a chemical reaction, outs to model the reaction and see that all the atoms in the reactants show up in the products. Download the student activity sheet, and new bonds between the atoms are formed to make the products.