CulverCity H.S. • Chemistry Honors

4 · Structure of the Atom

STATION 1 •THE ATOM

For each of the following, indicate whether it describes the proton (P), neutron (N), or electron (E). Each description may refer to one or more subatomic particle.

Determines the mass of the atom Carries a +1 charge

Has a mass of 1/1800th amu Has a mass of 1 amu

Makes up the nucleus Determines the identity of the atom

Is changed to form different ions Determines the size of the atom

Has no charge Is changed to form different isotopes.

4 · Structure of the Atom

STATION 2 •ISOTOPIC NOTATION

Complete the following table:

Isotope / Atomic
Number / Mass
Number / Number of Protons / Number of
neutrons / Number of
electrons / Net Charge
20 / 24 / 0
27 / 13 / 13
26 / 57 / 24
131 / 78 / –1

4 · Structure of the Atom

STATION 3 •MORE ISOTOPIC NOTATION

Write the isotopic notation for the following atoms:

  • 50 protons, 68 neutrons, 46 electrons
/
  • 15 protons, 16 neutrons, 18 electrons

  • 80 protons, 118 neutrons, 79 electrons
/
  • 28 protons, 34 neutrons, 28 electrons

Find the number of protons, neutrons, and electrons for the following atoms:

  • 27Al3+
/
  • 129Xe

  • 18O2–
/
  • 53Cr3+

4 · Structure of the Atom

STATION 4 •ATOMIC HISTORY

Match the discovery or experiment on the left column with a scientist on the right column

1.Discovery of the electronA.Democritus

2.Discovery of the neutronB.Ernest Rutherford

3.Discovery of the protonC.J.J. Thomson

4.Discovery of the nucleusD.James Chadwick

5.Gold foil experiment E. John Dalton

6.Cathode ray tube experiments F.Niels Bohr

7.Oil drop experimentG. Robert Millikan

4 · Structure of the Atom

STATION 5 •MORE ATOMIC HISTORY

Match the atomic model on the left column with a scientist on the right column

1.Plum Pudding ModelA.Democritus

2.Billiard Ball ModelB.Ernest Rutherford

3.Planetary ModelC.Erwin Schrodinger & Werner Heisenberg

4.Nuclear ModelD.J.J. Thomson

5.“Atomos”E. John Dalton

6.Electron Cloud ModelF.Niels Bohr

4 · Structure of the Atom

STATION 6 •RADIOACTIVITY

For each of the following, indicate whether it describes alpha radiation (A), beta radiation (B), or gamma radiation (G). Each description may refer to one or more subatomic particle.

High energy light high speed electron

Has a mass of 4 amu Has a charge of 1-

Least penetrating Most penetrating

A decay product of unstable nuclei Helium nucleus

Has no charge Has a charge of 2+

4 · Structure of the Atom

STATION 7 •NUCLEAR EQUATIONS

Write the complete nuclear equation for the alpha decay of uranium-238

Write the complete nuclear equation for the beta decay of carbon-14

4 · Structure of the Atom

STATION 8 •DIMENSIONAL ANALYSIS REVIEW

Show your work for each question.

  1. Convert 3.4 x 103 Mg to cg
  1. Convert 5.4 cm3 to m3
  1. Convert 65 miles/hour to km/min

4 · Structure of the Atom

STATION 9 •DENSITY REVIEW

Data / Use the data to identify the metal in the block:
aluminum(density = 2.70 g/cm3)
copper(density = 8.92 g/cm3)
iron(density = 7.86 g/cm3)
gold(density = 19.3 g/cm3)
Length of metal block / 3.55 cm
Width of metal block / 1.55 cm
Height of metal block / 1.11 cm
Mass of metal block / 54.48 g

The density of titanium is 4.50 g/cm3. What is the mass of a 35.0 cm3 titanium ball?

4 · Structure of the Atom

STATION 9 • DENSITY REVIEW

Data / Use the data to identify the metal in the block:
aluminum(density = 2.70 g/cm3)
copper(density = 8.92 g/cm3)
iron(density = 7.86 g/cm3)
gold(density = 19.3 g/cm3)
Length of metal block / 3.55 cm
Width of metal block / 1.55 cm
Height of metal block / 1.11 cm
Mass of metal block / 54.48 g

The density of titanium is 4.50 g/cm3. What is the mass of a 35.0 cm3 titanium ball?