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Controlled Experiment Variables: Changing One at a Time

Understand the importance of changing only one variable at a time in controlled experiments. Learn about the reactivity and stability of Fluorine element. Homework agenda and test preparation.

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Controlled Experiment Variables: Changing One at a Time

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  1. Warm up 09/20/13 • Question: During a controlled experiment, how many variables should you change at a time? • Answer: • Only one (experimental variable) • Keep others the same (control variables) • Goal: I will explore making a scientific claim and supporting it with evidence and reasoning.

  2. ELEMENT OF THE DAY • 9 – Fluorine – F • Fluorine is among the most reactive elements. It gives off a great deal of energy when reacting, causing most things to catch on fire. • Fluorine compounds are among the most stable because they require a great amount of energy to split apart. • Fluorine is important in strong teeth and Teflon

  3. Attendance / Bellwork • BTSN Recap • Sci method discussion • Mythbusters! • Homework Agenda

  4. Homework • Test Next Tuesday – ch 1 packet • HAVE A GREAT WEEKEND!

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