Part 2 - Atomic Structure

Introduce the atomic model stating that atom is indivisible.

a. Democritus

b. John Dalton

c. JJ Thomson

d. Ernst Rutherford

a. Democritus

Introduce the Billiard Ball Model stating that matter is made up of atoms as its basic unit.

a. Democritus

b. John Dalton

c. JJ Thomson

d. Ernst Rutherford

b. John Dalton

John Dalton postulates the following except:

a. Elements are composed of indivisible, indestructible atoms.

b. Atoms are alike for a given element.

c. Atoms of different elements differ in size, mass, and other properties.

d. Compounds are form from more than 2 atoms of different elements.

e. Atoms combine in simple numerical ratios to form compound.

f. None

f. None

Created Plum Pudding Model or Raisin Bread Model which lead to the discovery of electrons.

a. Democritus

b. John Dalton

c. JJ Thomson

d. Ernst Rutherford

c. JJ Thomson

Performed the gold foil/a-scattering experiment indicating that atom is mostly empty and discovering the presence of positive particles in the nucleus.

a. Democritus

b. John Dalton

c. JJ Thomson

d. Ernest Rutherford

d. Ernest Rutherford

Made the mostly used atomic model, planetary model.

a. Ernest Rutherford

b. Eugene Goldstein

c. Erwin Schrodinger

d. Neil Bohr

d. Neil Bohr

Introduce the Quantum Mechanical/Electron Cloud Model which the modern atomic model that estimate the probability of finding and e- in certain position (i.e., at e- cloud/orbital).

a. Ernest Rutherford

b. Eugene Goldstein

c. Erwin Schrodinger

d. Neil Bohr

c. Erwin Schrodinger

Positive ion:

a. Proton

b. Electron

c. Neutron

a. Proton

Negative ion:

a. Proton

b. Electron

c. Neutron

b. Electron

Has no charge:

a. Proton

b. Electron

c. Neutron

c. Neutron

Equates to the atomic number which is the basis of electronic configuration:

a. Proton

b. Electron

c. Neutron

a. Proton

Proton in uncharged state which has negligible weight as it is 1,836 lighter than proton.

a. Proton

b. Electron

c. Neutron

b. Electron

Electron is ______ lighter than proton.

a. 1,536x

b. 1,636x

c. 1,736x

d. 1,836x

d. 1,836x

Consist the atomic mass together with proton:

a. Proton

b. Electron

c. Neutron

c. Neutron

Atomic Mass = Proton + Neutron

Contributed in the discovery of protons:

a. James Chadwick

b. Ernest Rutherford

c. J.J. Thompson

d. R.A. Millikan

b. Ernest Rutherford

First discovered electron through cathode ray tube and able to determine the ratio of electron charge to mass:

a. James Chadwick

b. Ernest Rutherford

c. J.J. Thompson

d. R.A. Millikan

c. J.J. Thompson

Performed the oil drop experiment and was able to measure accurate charge and mass of electron:

a. James Chadwick

b. Ernest Rutherford

c. J.J. Thompson

d. R.A. Millikan

d. R.A. Millikan

Discovered the neutrons:

a. James Chadwick

b. Ernest Rutherford

c. J.J. Thompson

d. R.A. Millikan

a. James Chadwick

P

#p = 15

#n = 16

#e = 18

Find atomic number:

a. 15

b. 16

c. 31

d. -3

e. 3

a. 15

Atomic number = Number of proton

P

#p = 15

#n = 16

#e = 18

Find atomic mass:

a. 15

b. 16

c. 31

d. -3

e. 3

c. 31

Atomic mass = Proton + Neutron

P

#p = 15

#n = 16

#e = 18

Find charge:

a. 15

b. 16

c. 31

d. -3

e. 3

d. -3

Charge = Proton - Electron

Discovered anode rays:

a. James Chadwick

b. Ernest Rutherford

c. J.J. Thompson

d. R.A. Millikan

e. Eugene Gold Stein

e. Eugene Gold Stein

Electrochemistry:

a. Particle separation based on e-

b. Example is capillary electrophoresis

c. Capillary electrophoresis is the separation of compounds based on electrophoretic mobility

d. a and b

e. b and c

f. All

f. All

Capillary electrophoresis is the separation of compounds based on electrophoretic mobility.

a. True

b. False

a. True

Anode is a:

a. Positively charged electrode

b. Negatively charged electrode

c. Uncharged electrode

a. Positively charged electrode

Cathode is a:

a. Positively charged electrode

b. Negatively charged electrode

c. Uncharged electrode

b. Negatively charged electrode

Anode:

a. Undergo oxidation

b. Undergo reduction

a. Undergo oxidation

*Tips for remembering:

• Anode starts in vowel (A), undergoes Oxidation which also starts in vowel (O)

• Cathode starts in consonant (C), undergoes Reduction which also starts in consonant (R)

Cathode:

a. Undergo oxidation

b. Undergo reduction

b. Undergo reduction

*Tips for remembering:

• RED CAT ELECT IN: REDuction happens in CAThode where ELECTrons get IN

Isotopes:

I. Same proton

II. Same atomic number

III. Same element

IV. Different atomic mass

V. Same neutron

a. I, II, III, IV, V

b. I, II, III, IV

c. I, II, III

d. I, II

e. III, IV, V

b. I, II, III, IV

Isotopes:

I. Same proton

II. Same atomic number

III. Same element

IV. Different atomic mass

V. Different neutron: since different atomic mass but same proton

Common non-isotopes:

a. 19F

b. 127I

c. 31P

d. a and b

e. b and c

f. All

f. All

Main +1 isotopes except:

a. 1H

b. 12C

c. 14N

d. 32S

e. 35Cl

f. None

f. None

+1 isotopes means that isotope has additional 1 to their atomic number.

• Isotope of 1H is 2H which is deuterium

• Isotope of 12C is 13 C

Main +2 isotopes:

a. 16O

b. 79Br

c. 35Cl

d. a and b

e. b and c

f. All

d. a and b

35Cl is +1 isotope

+2 isotopes means that isotope has additional 2 to their atomic number.

• Isotope of 16O is 18O which is deuterium

• Isotope of 79Br is 81Br

Isotope of 14N:

a. 12N

b. 15N

c. 16N

d. 18N

b. 15N

Since 14N has +1 isotope.

Isotope of 79Br:

a. 80Br

b. 81Br

c. 85Br

d. 90Br

b. 81Br

Since 79Br has +2 isotope.

Same atomic number but different atomic mass:

a. Isotopes

b. Isobars

c. Isotones

d. Isomers

a. Isotopes

Same atomic mass but different element:

a. Isotopes

b. Isobars

c. Isotones

d. Isomers

b. Isobars

Same molecular formula but different structure:

a. Isotopes

b. Isobars

c. Isotones

d. Isomers

d. Isomers

Same neutrons but different atomic number:

a. Isotopes

b. Isobars

c. Isotones

d. Isomers

c. Isotones

Different atomic number also indicate that they are different element.

Monosaccharides are example of:

a. Isotopes

b. Isobars

c. Isotones

d. Isomers

d. Isomers