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AP Chem #4 - Ch 7-8

Authored by Jon Townsend

Chemistry

11th - 12th Grade

Used 18+ times

AP Chem #4 - Ch 7-8
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23 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

As the number of known elements increased, scientist began classifying them and organizing them. In 1869, Mendeleev noticed a pattern when elements are arranged by ___.

increasing atomic weight

decreasing atomic weight

increasing atomic number

decreasing atomic number

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Two years after Rutherford's nuclear model of an atom was published, Henry Moseley developed the concept of ___ leading to the modern periodic table.

atomic number

atomic weight

average atomic mass

atomic radius

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Many properties depend on electron config and their attractions. One measurement is the Effective Nuclear Charge. If sodium has the config of [Ne]3s1, what is the effective nuclear charge?

1+

2+

3+

1-

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Why does the attraction of a valence electron to the nucleus decrease as the atomic number increases?

Increased shielding effect by increasing core e-

Decreasing atomic radius increases electronegativity

Increasing atomic number implies increased number of protons

Decreasing ionization energy implies electrons are removed more easily

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Within each group, bonding atomic radius tends to ___ from top to bottom.

increase

decrease

stay constant

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Within each period, bonding atomic radius tends to ___ from left to right.

increase

decrease

stay constant

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ionization energy of an atom is the minimum energy required to remove an electron.

The first ionization energy, IE1, generally ___ as we move left to right across a period.

increases

decreases

stays constant

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