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What we’ve learned so far: Measurement – Resolution & Significant Figures

What we’ve learned so far: Measurement – Resolution & Significant Figures Scientific Method – Claims, Evidence, Reasoning Classifying Matter – Pure (element, compound) vs. Mixture (heterogeneous vs. homogeneous) States of Matter, Temperature, & Intermolecular Forces Density

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What we’ve learned so far: Measurement – Resolution & Significant Figures

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  1. What we’ve learned so far: • Measurement – Resolution & Significant Figures • Scientific Method – Claims, Evidence, Reasoning • Classifying Matter – Pure (element, compound) vs. Mixture (heterogeneous vs. homogeneous) • States of Matter, Temperature, & Intermolecular Forces • Density • Atoms – Structure, Subatomic Particles • Periodic Table – Organization Based on Electrons • Next up: Chemical bonding + beyond!

  2. Warm up 12/03/13 • Question: How many valence electrons does Lithium have? Silicon? Sulfur? • Answer: • Li = 1 valence electron • Si = 4 • S = 6 • Goal: I will learn to make Lewis dot diagrams.

  3. ELEMENT OF THE DAY • 36 – Krypton – Kr • Krypton, which is non-reactive, is used in higher-end incandescent light bulbs to protect the filament. • Krypton glows a bluish-white when you run electricity through it.

  4. ELEMENT OF THE DAY • 37 – Rubidium – Rb • Rubidium’s name comes from the Latin word for red, even though it is a silvery metal. • Rubidium has a red spectral line, hence its name, and provides a purplish color in some fireworks. • Rubidium clocks, while not as accurate as cesium clocks, are much cheaper.

  5. Bellwork / New & Good • What we’ve learned so far • Review Test • Electron shell activity • Video – You can’t touch anything • Homework • pg7-10 • Test Corrections by Fri Agenda

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