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How do you know when a reaction takes place? A chemical reaction happens when there is a color change. The formation and release of a gas. Formation of water and formation of precipitate.

Can the same reactants make multiple different products? Some reactants can make multiple reactants. For example decomposition reactions make many products. Heat help splits the reactant and make multiple products. When you born something CO2 is release.

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Many online sources offer helpful tips and strategies for balancing chemical equations. One tip said to solve the equation one element at a time and correct as you go along. Another source said to solve for oxygen last.

Balancing chemical equations directly correlates with and must follow the Law of Conservation of Mass. When changing from one substance to another in a chemical reaction a substance cannot become another without the components necessary. For example, hydrogen and oxygen cannot become water without the 2 necessary hydrogen atoms.

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Rules of Balancing Equations:

1. Get an unbalanced equation.

2. Draw boxes around the chemical formulas.

3. Make an element inventory.

4. Write numbers in front of each box until the inventory for each element is the same on both sides.

The yield sign goes from the reactant to the products. Since the reactants are on the left and the products on the right the yield sign should only go one way.

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The chemical formulas cannot be altered when balancing chemical equations. Only the coefficients can be changed so that the equation is balanced and the Law of Conservation of Mass is upheld.

Since the Law of Conservation of Mass states that matter cannot be created or destroyed, we must balance equations. To balance equations in accordance with the law that Lavosier is credited with the number of atoms for each element must be the same in the reactants and products.

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Count the number of atoms of each element in the reactants. Balance the elements one at a time by using coefficients.

Yes, the yield signs direction depends on which way the chemical reaction is going. You use <- = = -> whenever the chemical reaction goes both ways . The yield symbol is basically an "equal" sign.

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Teacher question : matter cannot be created or destroyed, so there must be the same number of atoms of each element on each side of a chemical equation.

Groups question: what are 5 types of reactions and an example of each?

Synthesis: Zn +S --> ZnS

Decomposition: MgCO3 -heat-> Mg CO2

Single replacement: Na + HgCl --> Hg + NaCl

Double D : NaCl + AgNO3 --> NaNO3 + AgCl3

Combustion: c3H6 + O2 --> H2O + CO2

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Each Group should have two statements answering the questions.

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Type in your Questions and the Answer

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How does balancing equations follow the Law of Conservation of Mass?

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How do you determine(predict)
what type of reaction happens?

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Can the same reactants make
multiple different products?

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Can the yields sign go the other way?
--->, <---- or  <==>

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What are the rules to balancing an equation?

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