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Protons Identify an Element/atom (2 protons = Helium)

Protons Identify an Element/atom (2 protons = Helium) Protons + Neutrons = Atomic Mass/Weight ( 2 Protons + 2 Neutrons = 4 AMU ) Chemical Properties  Reactivity  Valence Electrons Nonreactive (left on periodic table)  Reactive (Right on table) = B .

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Protons Identify an Element/atom (2 protons = Helium)

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  1. Protons Identify an Element/atom (2 protons = Helium) • Protons + Neutrons = Atomic Mass/Weight (2 Protons + 2 Neutrons = 4 AMU) • Chemical Properties  Reactivity  Valence Electrons • Nonreactive (left on periodic table)  Reactive (Right on table) = B

  2. Families/Columns = similar characteristics (A = all Halogens) • Left to Right  Metals>Metalloids>Nonmetals>Noble Gases • Families/Columns = similar chemical & physical properties • Same column (S & O are in Same column – NOT on STAIRCASE!)

  3. 4H2O - Coefficients = # of molecules • H2O – Subscript= # of Atoms • 4H2O – Coefficient x subscript = total # of atoms

  4. Accelerating  Speeding up, slowing down, turning. • Velocity  straight line with direction • Speed  distance travel in any way over time

  5. Force = Mass x Acceleration (2nd Law) • Action – Reaction (3rd Law) • Motion – Stays in Motion/Rest – Stays in Rest (Inertia/1st) • Balanced = not moving…. Unbalanced = Moving

  6. Balanced = 0 Net force  no increasing speed • F = ma  F = 15x5  75

  7. F = ma  a = f/m • Think (bigger bottom # = Smaller answer) • Do Math (50/38 = 1.31, 50/36 = 1.39, 50/21 = 2.38) • LEAST ACCELERATION = Greatest Mass

  8. Draw lines across H-R Diagram • Hotter but as bright? (D) • Cooler & Brighter than the sun (B)

  9. Uplifting & push together = mountain • Plates meet > magma > erupting surface • Map of tectonic plates!!

  10. Think Levels • Topographic map = Land Features • Air Pressure Looks similar, but is not elevation!

  11. In the formation of specific compounds, the elements A always combine in a specific mass ratios. B can combine in several different mass ratios. C always have properties identical to those for the compounds formed D always combine in a 1:1 mass ratio • Chemical Formula • C6H12O6, H2O, H2O2, Fe2O3 • Can not change ratios!! Change the compound.

  12. Greatest Potential = Highest!! • Greatest Kinetic = Lowest!! • They continuously switch

  13. 6.8 (C) – Calculate average speed • S = d/t • Need d • 20 = ?/4 • Either 5 or 80 • 20 = 5/4 • 20 = 80/4

  14. 6.8 (D) – Measure and graph changes in motion • Distance / Time • C (remains the same) • Speed / Time • B (increasing) • DE shows change in speed (increasing)

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