Types and Rates of Reactions

Carbonic acid (H₂CO₃) forms carbon dioxide (CO₂) and water (H₂O)during a decomposition reaction. Which of these represents the reactant side of the chemical reaction?

• H2CO3

• H2O + CO2

• CO2 + H2CO3

• H2O + CO2 + H2CO3

The chemical equation shows the reaction between hydrogen fluoride (HF) and sodium hydroxide (NaOH).
​
HF + NaOH → H₂​O+ NaF
​
Which type of chemical reaction does this equation represent?

• Deomposition

• Combustion

• Double Replacement

• Single Replacement

What type of reaction is represented by this balanced equation?

• Synthesis

• Decomposition

• Combustion

• Single Replacement

What will be the products of this single replacement reaction?

• 
• 
• 
• 

What toe of chemical reaction is represented by the equation below?

• Combustion

• Synthesis

• Single Replacement

• Decomposition

A student concludes that the unknown chemical acts as a catalyst. Which evidence from the graph supports the student’s conclusion?

• The amount of product increase when the chemical was added

• The chemical remained unchanged at the end of the reaction

• The rat of reaction increased when the chemical was added

• The chemical caused a reduction in the rate of reaction.

A student observed that the rate of a chemical reaction increased as the temperature of the system increased.
Which of the following statements best explains why thermal energy caused an increase in the reaction rate?

• The surface area of the product particles decreased

• The collision rate of the reactant particles increased

• The concentration of the reactant particles increased

• The concentration of the product particles decreased.

Which factor is causing test tube B to have a faster rate of reaction?

• Presence of a catalyst

• Greater surface area of the alluminum

• Greater concentration of the aluminum

• Higher temperature

Which of the following are factors that affect the rate of reaction? (Choose all that apply)

• Temperature

• Concentration

• State of Matter

• Presence of a catalyst

In Investigation 2, an exothermic reaction occurred as energy was released. What is the best evidence that an exothermic reaction occurred in the beaker?

• The mass decreased

• The bubbling Topped

• There was a change in color

• There was a change i temperature