NGS Ch 10 - Section 2: Writing Formulas and Naming Compounds

What is a binary compound?

• A compound composed of three elements

• A compound with water attached

• A compound composed of just two elements

• A compound with a net charge of one

Tags

NGSS.MS-PS1-1

What is a hydrate?

• A compound with water chemically attached to its ions

• A compound composed of two metals

• A compound with no water

• A compound with a net charge of zero

What does the prefix 'poly' in polyatomic mean?

• One

• Two

• Many

• None

What is the oxidation number?

• A positive or negative number indicating electron gain, loss, or sharing

• The number of protons in an atom

• The number of neutrons in an atom

• The atomic mass of an element

Which method is used to ensure the sum of oxidation numbers in a formula is zero?

• The crisscross method

• The division method

• The subtraction method

• The addition method

What is the root of the name for chlorine when naming compounds?

• Ch-

• Chlo-

• Chlor-

• Chl-

How do you name a covalent compound with two nitrogen atoms and one oxygen atom?

• Nitrogen dioxide

• Dinitrogen monoxide

• Nitrogen oxide

• Mononitrogen dioxide

What is the correct name for the compound BaF2?

• Barium Fluoride

• Barium Fluorine

• Barium Difluoride

• Barium Monofluoride

Which of the following is a polyatomic ion?

• NH4+

• Cl-

• O2-

• Na+

What is the first step in writing formulas for compounds?

• Add subscripts to balance the charge

• Write the symbol of the element with the positive oxidation number

• Write the symbol of the element with the negative oxidation number

• Determine the root of the second element