Question: QUESTION 1 When a fluorine atom forms the fluoride ion, it has the same charge as the __________ ion. A) sulfide B) ammonium C) nitrate

QUESTION 1

When a fluorine atom forms the fluoride ion, it has the same charge as the __________ ion.

A) sulfide

B) ammonium

C) nitrate

D) phosphate

QUESTION 2

The correct formula for an ion with 33 protons & 36 electrons is?

As

Kr

As3-

As3+

QUESTION 3

How many moles are in 0.210 Kg of Aluminum, Al ? Report your answer to the correct number Sig. Fig

A.

27.0 g Al
B.

7.80 g Al
C.

7.78 g Al
D.

5.67 g Al
E.

0.00778 g Al

QUESTION 4

When a metal and a nonmetal react, the __________ tends to GAIN electrons and the __________ tends to LOSE electrons.

A) metal, metal

B) nonmetal, nonmetal

C) metal, nonmetal

D) nonmetal, metal

QUESTION 5

How many of the following elements are semiconductor of electricity?

Boron Aluminum Gallium Silicon Selenium Lead

Copper Sulfur Iodine

A.

2
B.

3
C.

4
D.

5
E.

6

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