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Quiz1 A05 - 2 Use the attached period table What is the...

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Chemistry 6A Fall 2008 Discussion Section A/E05 QUIZ 1 UCSD PID: |A|__|__|__|__|__|__|__|__| E-mail: [email protected] Printed Last Name: ________________________________ Printed First Name: ________________________________ Signature: ________________________________________ Total Points: _______________ / 20 You have 10 mins to complete this quiz. Please show all your work, but write the answers in the designated spaces. The points allotted for each question are indicated in parenthesis. Potentially Helpful Constants: Mass of electron, m e = 9.10938 x 10 -31 kg Mass of proton, m p = 1.67262 x 10 -27 kg Mass of neutron, m n = 1.67493 x 10 -27 kg Fundamental charge, e = 1.60218 x 10 -19 C g = 9.80665 m s -2 c = 2.99792 x 10 8 m s -1 Potentially Helpful Conversion Factors: 1 J = 1 N•m 1 N = 1 kg m s -2 1 L = 10 3 cm 3 Potentially Helpful Equations: E K = 1/2mv 2 E p = q 1 q 2 4 πε 0 r E p = mgh c = νλ 1. How many significant figures should be results of the following calculation be reported: ___2__ (2pt) (3.15 + 1.2) x 0.42527 x 0.2273 (5.7216 + 3.47)
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Unformatted text preview: 2. Use the attached period table. What is the atomic number of sodium: _11__ What is the mass number of sodium:_22.99___ Name the group to which sodium belong:__ _alkali metals_____________ For an atom of Na-24, how many neutrons are present:__13__ How many protons are present:_11___ How many electrons are present:__11__ (6pt) 3. What is the amplitude and wavelength of the following wave? If the wave is traveling at 10 m/s, what is its frequency? (7pt) Amplitude:____6_____cm_ __ Wavelength:___10_____cm_ __ Frequency :____100_____hz_ __ 4. True false: (5pt) _T__ Nitrogen is one of the pnictogens. _T__ Microwave radiation has longer wavelength than ultraviolet radiation. _F__ Green light has longer wavelength than red light. _F__ Millikan’s experiment determined the mass of a proton. _F__ In Rutherford’s experiment, alpha particles were deflected by the electrons orbiting the platinum atoms. PERIODIC TABLE OF THE ELEMENTS...
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Quiz1 A05 - 2 Use the attached period table What is the...

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