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Mark Metzger

Chem H90

HW1: Due Mon Apr 4, noon.

Simulation Questions:Please go to the PhET website (http://phet.colorado.edu/). Click pla!with sims" and #nd the appropriate sim $or the problem set. %n thiscase we will be looking at &uild an 'tom".

. Combine * protons+ electrons or neutrons to make a positi,e iono$ mass about -. i,e the chemical s!mbol $or what !ou made.% got 0e (0eon) as m! answer+ with a positi,e charge o$ one anda mass o$ -.

. %$ !ou lose a proton+ what do !ou get.% got 1luorine as m! answer when % lost a proton.

2. %$ !ou change the model to cloud" instead o$ orbits"+ whathappens to the cloud when !ou remo,e an electron $rom theatom !ou made3 4h!3The si5e o$ the cloud shrinks with each atom remo,ed because acloud increases or decreases in si5e depending on the amount o$electrons.

6. Pla! a game. Chose le,el 2 or 6 and take a screen shot o$ !our#nal score and time.

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Te7tbook Questions:

8o problems 9+ + + -+ + + 2+ 6.

5. Clothing, bakpak!, pla!ti re"it ar"!, et#

11. a$ Water i! a rene%able energ& !oure beau!e o' the %ater &le an" it(! on!tant

natural repleni!hment.b$ )o!!il 'uel! are nonrene%able energ& !oure! beau!e there i! a limite" !uppl&

o' the 'uel an" it annot be re!tore".*0. D*1. a$ +1,09.-4 mmile / 1000$1,09,-40 mmmile

b$ +-1,55,95* !&ear / 1000$-1,55,95*,000 m!&ear

$ +90125 gram!ton / 0.000001$0.90125 mirogram!gram**. 0.001 kgg, !o there are 1,000 gram!kilogram

*-. +4,100 km / 1000$4,100,000 meter!3 +4,100,000 / 100$410,000,000 m

*4. a$ +-0,000,000,000100$-00,000,000 m!3 +-00,000,000 / +0 / 0 / *4 / -5$

9,40,200,000,000,000 mlight &earb$ +9,40,200,000,000,0001,09.-45,22,2-,12,29.5 mile!light &ear

8emo ;uestion: