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

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Presentation transcript:

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

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!)

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

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

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

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

Think (bigger bottom # = Smaller answer) 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

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

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

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

Can not change ratios!! Change the compound. 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.

Greatest Potential = Highest!! Greatest Kinetic = Lowest!! They continuously switch

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

DE shows change in speed (increasing) 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)