3/7 final

How many grams are there in 231 cg?

• .231 g

• .23g

• 2.31g

• 23.1g

How many ounces are there in 2.5kg? There is 454g in 16oz. 2 sigfigs only

• 80.0

• 90

• 88

• 88.1

What is the name for a Fe²⁺ ion?

• Iron (II) Ion

• Iron (III) Ion

• Iron 2 ion

• Iron ion

How many electrons are in the valence shell of a phosphorus atom?

• 4

• 5

• 6

• 7

What is the last element that puts an electron into a 4s orbital?

• K

• Ca

• Na

• Mg

This is a hypothesis that has been tested repeatedly and found correct and has a significant impact behind it.

• hypothesis

• law

• theory

• experiment

How many single electrons does the lewis dot structure for aluminum show?

• 0

• 1

• 2

• 3

What is the Sn⁴⁺ ion called?

• Tin (II) ion

• Tin (IV) Ion

• Tin 2 ion

• Tin 4 ion

What is a PO₃^-3?

• Phosphate ion

• Phosphite ion

• Phosphide ion

What is the valence shell of an atom?

• inner most shell

• outer most shell

• any inner shell