Binary and Polyatomic Formula Writing

When writing the chemical formula of a compound that contains more than one of a particular polyatomic ion, _____ must be used.

• ionic charges

• parenthesis

• Greek prefixes

• lower case letters.

What is the correct name of the compound CaCl₂?

• Calcium dichloride

• Calcium dichlorine

• Calcium chlorine

• Calcium chloride

Tags

NGSS.MS-PS1-1

All binary compounds end with_____.

• -ous

• -ate

• -ide

• -ite

What is the correct name for the compound LiF?

• Lithium fluoride

• Lithium fluorine

• monolithium monofluoride

• lithium monofluoride

Tags

NGSS.MS-PS1-1

What is the correct formula for Ammonium phosphate?

• NH₄PO₄

• NH₄₃PO₄

• (NH₄)₃PO₄

• NH₄(PO₄)₃

Tags

NGSS.MS-PS1-1

How many atoms of oxygen are in a molecule of Ca₃(PO₄)₂

• 1

• 2

• 4

• 8

_______ is an ion that contains more than one atom.

• monatomic ion

• complex ion

• polyatomic ion

• diatomic ion

A negatively-charged ion.

• atom
• cation
• anion
• electron

Tags

NGSS.HS-PS1-1

An atom that has lost or gained electrons; an atom with a charge.

• cation
• anion
• isotope
• ion

Cations are

• positive
• negative
• on the right side of the periodic table.
• nonmetals

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2