Lab: Chemical Changes

What is the main result of a chemical reaction?

• Creation of new matter

• Destruction of energy

• Change in substances

• Elimination of heat

Which law is upheld through ordinary chemical reactions?

• Law of Gravity

• Law of Conservation of Matter

• Law of Thermodynamics

• Law of Motion

As shown in the model above, list the number of reactants and the number of products found in a synthesis reaction. Describe in a single sentence how you can identify a synthesis reaction.

• Two reactants, one product; identified by combining elements.

• One reactant, two products; identified by breaking down compounds.

• Two reactants, two products; identified by exchanging ions.

• One reactant, one product; identified by combustion.

As shown in the model above, list the number of reactants and the number of products found in a decomposition reaction. Describe in a single sentence how you can identify a decomposition reaction.

• Two reactants, one product; identified by combining elements.

• One reactant, two products; identified by breaking down compounds.

• Two reactants, two products; identified by exchanging ions.

• One reactant, one product; identified by combustion.

As shown in the model above, list the number of reactants and the number of products found in a single replacement reaction.

• Two reactants, one product.

• One reactant, two products.

• Two reactants, two products.

• One reactant, one product.

As shown in the model above, list the number of reactants and the number of products found in a double replacement reaction.

• Two reactants, one product.

• One reactant, two products.

• Two reactants, two products.

• One reactant, one product.

How would you compare a single replacement reaction to a double replacement reaction? Describe in a single sentence how you can identify a single replacement reaction and a double replacement reaction.

• Single replacement involves one element replacing another; double replacement involves exchange of ions.

• Single replacement involves exchange of ions; double replacement involves one element replacing another.

• Both involve combustion.

• Both involve synthesis.

Identify the type of reaction shown in the chemical equation: KClO₃(s) → 2KCl(s) + 3O₂(g)

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Identify the type of reaction shown in the chemical equation: AgNO₃(aq) + KCl(aq) → AgCl(s) + KNO₃(aq)

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Identify the type of reaction shown in the chemical equation: 2H₂(g) + O₂(g) → 2H₂O(g)

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement