Based on the article “Will the real atomic model please stand up?,” why did J. J. Thomson experiment with cathode ray tubes?

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

257 grams h2o i think

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck