4 original questions from New Regents. The worksheet, answer key, and browser practice are free.
Checking a Product Added at the Start 4 questions
Checking a Product Added at the Start
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A model reaction converts one A particle into one B particle. Two trials start with ten A particles. P starts with no B. Q starts with two B particles already added. The sensor reports all B particles, including any present before the reaction.
| Trial | B count at start | B count at 10 s | B count at the end |
|---|---|---|---|
| P | 0 | 1 | 10 |
| Q | 2 | 6 | 12 |
Question 1
How many B particles does Q form during the first ten seconds?
- 2
- 4
- 6
- 12
Question 2
Use both records to compare the early average rates of B formation.
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Question 3
A student uses the higher final reading for Q to argue that Q converted more A overall. Evaluate the claim.
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The class can start a third trial with two particles of an inert model substance instead of two B particles. Everything else can match Q.
Question 4
State the comparison to make and one result that would support an effect specific to the added B particles.
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