Homework to be completed prior to 10/17/2015 Chemistry SAT class

All students are required to do the homework assignments in both Princeton Review SAT Chemistry Subject Test book and Princeton Review AP Chemistry Exam regardless if you plan to take AP exam or not.

On Cracking the SAT Chemistry Subject Test, Princeton Review, 15th Edition

Chapter 6   Electron Configurations and Radioactivity:

Solve Question Type A:  #1, #2, and #3, on Page 76

Solve Question Type B:  #101 on Page 76

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On Cracking AP Chemistry Exam, Princeton Review, 2016 Edition

Chapter 3 Atoms, Elements, and the Building Blocks of Matter

Multiple-Choice Questions: #13, #14 on Page 93

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C = λν;   E = hν

Go to Princeton AP book, page 327, find above equation and the definition of C, λ, ν;   E  and h

Wave–particle duality: A theory that proposes that every elementary particle including electron exhibits the properties of not only particles, but also waves.

Single particle: The momentum of a particle is traditionally represented by the letter p. It is the product of two quantities, the mass (represented by the letter m) and velocity (v):

P = mv

Heisenberg’s uncertainty principle: It tells us that it is impossible to simultaneously measure the position and momentum of a particle with infinite precision, i.e.

(Δp((Δx) ≥ h/4π

Heisenberg established this expression as the minimum amount of unavoidable momentum disturbance caused by any position measurement.  He refined his principle:

Go to Princeton AP book, page 275, find the definition and value of of h (Planck’s constant) in the above equation.

This equation reveals that the more accurately a particle’s position is known, or the smaller Δx is, the less accurately the momentum of the particle Δp is known. Mathematically, this occurs because the smaller Δx becomes, the larger Δp must become in order to satisfy the inequality. However, the more accurately momentum is known the less accurately position is known.

(In our everyday lives we virtually never come up against this limit).

 

 

 

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