Question

Hypothesis

You are going to choose to investigate ONE factor that affects the rate of a reaction. You will choose between temperature, concentration, and particle size. If you have not already included these terms in your Introduction section, go research their meanings and potential impacts and add them to your introduction.

Choose ONE of the factors (temperature, concentration, or particle size) and write a hypothesis about what you think will happen in the experiment including an explanation about why you think that might happen. This should be an educated guess, you are NOT grade on whether you are right or wrong but instead on how well you explain your thinking and logic. Use what you learned about the concepts and your experiences up to this point to help you write the hypothesis.

Optional Sentence Starters:

"I predict that changing _______ will affect the reaction rate by..." (be sure to include if you think it will increase or decrease the rate of reaction)

"If I change _______ then the reaction rate will _______ because...."

Word Bank (it is NOT required to use all of them)
Temperature Hotter Colder
Concentration Higher Lower
Particle Size Bigger Smaller
Reaction Rate Increase Decrease
Interactions Energy Collisions

This is close to the missing introduction. What is your hypothesis? "I predict that increasing the concentration will _____". This is all you need to answer.

Answer 1

Introduction

For this portfolio, review your notes and lessons, then summarize the following ideas:

how does a reaction takes place "A reaction takes place when..."
what must happen for a reaction to take place "In order for a reaction to take place there must be..." and/or "A reaction can only take place when.."
what factors have you learned about that affect the reaction rate (speed). "The factors that affect reaction rate are..." and "______ affects the rate of the reaction by..." (repeat for each factor)
Include any NEW TERMS that you have learned recently relating to the concept. This should include any background information that would be helpful to understand the concept that you are investigating.

Word Bank (it is NOT required to use all of these)
Temperature Concentration Particle Size
Increase Decrease Reaction
Rate Speed Energy
Interaction Impact Collisions


The data collected clearly shows that increasing the temperature of the reactants led to a decrease in the time taken for the reaction to complete. This supports the hypothesis that higher temperatures can increase the rate of a reaction by providing the reactant molecules with more kinetic energy. These results have important implications for understanding and controlling chemical reactions in various applications, such as industrial processes and environmental chemistry. Further studies could explore how other factors, such as concentration and catalysts, also affect the rate of reactions. This is a conclusion. Why is it in your introduction response? explain why it is and what is the correct answer. and in 10 sentences

Answer 2

"I predict that increasing the concentration will increase the reaction rate because a higher concentration of reactant particles will result in more frequent collisions, leading to a higher likelihood of successful reactions occurring."

Answer 3

In order for a reaction to take place, reactant particles must collide with enough energy and in the correct orientation to break bonds and form new ones. A reaction can only take place when the total energy of the reactants is greater than the activation energy required for the reaction to occur. The factors that affect reaction rate are temperature, concentration, and particle size. Temperature affects the rate of the reaction by providing reactant particles with more kinetic energy, increasing the frequency of collisions. Concentration impacts the rate of the reaction by increasing the number of reactant particles available to collide with each other. Particle size affects the rate of reaction by providing more surface area for collisions to occur. Recently, I have learned about activation energy, which is the minimum amount of energy required for a reaction to take place. Additionally, the concept of catalysts as substances that can increase the rate of a reaction without being consumed in the process is important to understanding reaction kinetics.

The conclusion included in the introduction response is incorrect because the introduction should only provide a brief overview of the key concepts related to the investigation and not include any final findings or implications. The correct introduction should focus on defining the process of a chemical reaction, the necessary conditions for a reaction to occur, and the factors that can affect the rate of a reaction such as temperature, concentration, and particle size. It should also introduce any new terms or concepts relevant to the investigation.