Part A
Observe the substances in the test tubes for 15 minutes. In the table, describe what’s happening in each test tube, including any evidence of a chemical reaction.
Remember that evidence of chemical reactions can include change in color, change in smell, change in temperature, formation of a solid, or formation of bubbles. If there’s no observable change in a test tube, write “no reaction.”
Answers: 3
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Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
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Part A
Observe the substances in the test tubes for 15 minutes. In the table, describe what’s hap...
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