Using the Reasoning Tool to Write a Scientific Argument
In the right column of the table below, record the claim you have selected.
After reviewing your Science Seminar Evidence Cards, select the evidence you feel best supports or refutes this claim. Record this evidence in the left column. Then, in the rows below, record up to three pieces of additional evidence you feel could further support or refute your claim.
In the middle column, explain how each piece of evidence either supports or refutes your claim.
Question: Why is the liquid oxygen machine producing less liquid oxygen than normal?

Claim 1: There is frozen water in tank 2, which is blocking some of the oxygen from going into tank 3.
Claim 2: Some of the liquid oxygen evaporated in tank 3.
Claim 3: Some of the oxygen didn’t condense in tank 2.

Reference information from the “Liquid Oxygen” article:

Water has a stronger attraction between molecules than oxygen or nitrogen.
Oxygen has a stronger attraction than nitrogen.