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What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.

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What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, ensuring that mass is conserved.

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What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product. Example: Ca + O → CaO.

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What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products. Example: 2H2O → 2H2 + O2.

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What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: AB + CD → AD + CB.

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What is a combustion reaction?

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A combustion reaction is a type of chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat. Example: CH4 + 2O2 → CO2 + 2H2O.

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How do you determine the coefficient of a compound in a balanced equation?

Back

The coefficient of a compound in a balanced equation indicates the number of moles of that compound involved in the reaction. It is determined by balancing the number of atoms of each element on both sides of the equation.

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What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the relative amounts of reactants and products in a chemical reaction, allowing for the calculation of moles, mass, and volume.

Front

What is the product of aluminum reacting with iron (III) oxide?

Back

The reaction of aluminum with iron (III) oxide produces iron and aluminum oxide. Example: 2Al + Fe2O3 → 2Fe + Al2O3.

Front

What is the balanced equation for the reaction between zinc and copper (II) nitrate?

Back

The balanced equation is: Cu(NO3)2 (aq) + Zn(s) → Cu(s) + Zn(NO3)2 (aq).