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13 August, 15:21

Giselle is working with a chemical substance in a laboratory. She observes that when the chemical is heated, it gives off a gas. She assumes that the gas is oxygen but decides to test this assumption to verify it. Which type of scientific knowledge is Giselle's assumption?

A.

fact

B.

hypothesis

C.

law

D.

observation

E.

theory

+2
Answers (1)
  1. 13 August, 18:11
    0
    Her observation was B) a hypothesis
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