ch3 review2

CHAPTER 3 REVIEW -multiple choice & PROBLEM/ESSAYS

Proton, neutron, electron, proton & electron, neutron & proton– match with statements:

Example: atomic mass_____ atomic number____ no charge___ charged particles_____

Isotopes and ions how are they alike and different?

#Protons, neutrons electrons. Example C-14_________ in Sc⁺²_____ Ar_______

What are the 2 things about the mole everyone must know in chemistry?

What color should Bunsen burner flames be?_____ What causes the gas smell?________

Convert 5.8 mole Li_______________________ = g

Convert 12.7gAg________________________________ = atoms

Convert 45gF_________________________ = moles

Lead foil, d=11.4g/cc, mass 12.0g, l=20.0cm, w=5.0cm round answers to correct sig fig. vol=_________ thickness=_______

#moles = _______________ # atoms = ________________

Compare Cu and Zn melting pts and densities, using evidence from class

Draw a nucleus with electrons for sodium +1 ion with atomic mass of 25. hyphen notation for this nucleus___________ nuclear symbol______________

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What was the gold foil experiment? What did it show?

Dalton’s principles given on test. Match with laws of nature, Which had to be changed?

What is the standard to which all atomic masses are compared?

calculate ave atomic mass: Find average atomic mass of imaginary element x, given this data:

35.4% atomic mass 215, and 64.6% atomic mass 226 - show work and round to correct number of digits

explain the density demos you saw (silent, densitee, or floaters & sinkers)