Lab
Activity 4: Observation - An Important Scientific Tool
Purpose & Some Background:
Chemists are always using their senses (except taste) to detect
change or activity in an experiment. They then question how or why something
occurred and try to guess at a logical explanation. An educated guess
is called a hypothesis. These scientists will next set up an experiment
to either prove or disprove their hypothesis. Depending on the results,
the hypothesis is proven correct, shown to need revisions, or discarded
entirely. These are all steps in the scientific method. |
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Teacher’s Note: By the end of this lab, I want you to: 1. Understand the importance of making observations. 2. I want you to add procedures to your lab in order to determine the mass and number of moles of cooper (II) chloride and aluminum foil. |
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Materials:
Procedures: |
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Interpretations that must be included in your lab: 1. What questions do you have concerning what you observed after adding the aluminum? 2. What guesses (hypotheses) might be given as possible answers to these questions? 3. What were your results for the mole and mass determination? |
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