Your answer may include the following changes. Select each of the changes that you included in
your answer.
Heat the metal until it melts (physical
change)
Attempt to react the metal with oxygen
(chemical change).
Stretch the metal into a wire (physical
change)
Attempt to react the metal with acid (chemical

Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.