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Which of the following statements are cowith Daltons atomic theory as it was or

stated?

1. Sulfur and oxygen atoms have the same mass

2. Lead atoms can be converted into gold atoms

3. All cobalt atoms are identical

4. Potassium and Chlorine combine in a 1:1.3 ratio to form potas

5. Formation of a compound does not involve destruction of atom

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Which of the following statements are incwith Rutherfords nuclear theory of an

1. An oxygen atom has 8 protons and 16 electrons

2. The mass of nitrogen atom is due to its electrons

3. Neutral nitrogen atom has 7 protons and 7 electrons

4. Neutrons and protons have same mass but opposite charg

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Match the following pairs

____ J.J Thomson

____ John Dalton

____ Rutherford

____ James Chadwick

____ R. A. Millikan

A. Neutrons

B. Electron charge (Oil drop exp

C. Discovery of electron (cathod

D. Modern atomic theory

E. Nuclear theory of atoms (gol

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Determine the number of protons, electneutrons in each of the following

X

X

X

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What are the atomic number, mass number and the following in form?

1. Chlorine (Cl) isotope with 18 neutrons

1. Carbon (C) isotope with 7 neutrons

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1. Cu

2. F3. Cr4. I5. S

Which of the following elements would you expectproperties similar to Chlorine (Cl)

Which pair of elements do you expect to be most

Why?

1. N & O2. O & Se3. Li & Na4. Ge & As

5. Ar & Br

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To form an ion, aluminum is most lik

1. gain three electrons to become Al3.

2. lose three electrons to become Al3+.

3. gain three protons to become Al3+.

4. lose three protons to become Al3.

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Fill in the blanks to complete the tSymbol Ion

formed# electrons

in ion# protons

in ion

Ca Ca+2

Be 2

Br 35

Mg 12

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How many atoms are present in 2.45 mol of Ox(O2)

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A pure silver ring contains 2.8 x 10^22silver atmany moles of silver atoms does it conta

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Calculate the amount (moles) of carbon in 0.026lead

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How many silver atoms are there in 3.78

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