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