Question

investigative phenomenon: claim - evidence - reasoning
discuss the phenomenon
think about the investigative phenomenon video you watched. what was the science behind the phenomenon you observed? to help you build an understanding of the phenomenon, you will construct and revise a scientific argument.
build your argument through claim, evidence, and reasoning

1. sep ask questions write a question about the investigative phenomenon that you would like to discuss with your classmates. (your teacher may also provide you with one.)
2. sep construct written arguments use the claim - evidence - reasoning framework to build a scientific argument about the phenomenon. after stating your claim, support it with evidence and scientific reasoning.

make a claim your claim should be a response to the question stated above.
cite evidence identify data or knowledge that support your claim
use reasoning justify how the data and knowledge count as evidence toward supporting the claim.

Explanation:

1. For the first part, a possible question could be based on a specific aspect of the phenomenon like "Why did the chemical reaction occur at that rate in the video?"
2. For the second part, if the question was about the reaction - rate:

• Make a Claim: The reaction rate was high because of the high concentration of reactants.
• Cite Evidence: In the video, it was shown that when the concentration of the reactant solution was increased, the bubbles formed more rapidly.
• Use Reasoning: According to the collision - theory in chemistry, a higher concentration of reactants means more particles are present in a given volume. This increases the frequency of effective collisions between reactant particles, leading to a higher reaction rate.

Answer:

1. Question: Why did the chemical reaction occur at that rate in the video?
2. Make a Claim: The reaction rate was high because of the high concentration of reactants.

Cite Evidence: In the video, it was shown that when the concentration of the reactant solution was increased, the bubbles formed more rapidly.
Use Reasoning: According to the collision - theory in chemistry, a higher concentration of reactants means more particles are present in a given volume. This increases the frequency of effective collisions between reactant particles, leading to a higher reaction rate.