Chemical Names and Formula

In a chemical formula, the total positive charge and negative charge must add up to equal _____.

• 0

• 1

• 2

• 3

Tags

NGSS.HS-PS1-7

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

What is the correct formula of the potassium oxide?

• KO

• K₂O

• KO₂

• K₂O₂

What is the name of the compound NH₄OH?

• Nitrogen oxygen hydride

• Nitrogen hydroxide

• Ammonium oxygen hydride

• Ammonium hydroxide

What is the correct chemical formula for magnesium iodide?

• MgI₂

• Mg₂I

• MgI

• Mg₂I₂

Tags

NGSS.MS-PS1-1

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

• 1

• 2

• 4

• 8

Tags

NGSS.MS-PS1-1

What is the correct formula for aluminum sulfide?

• Al₃S₂

• Al₂S

• AlS₂

• Al₂S₃

What is the correct name of the compound Mg(NO₃)₂?

• Magnesium nitride

• Magnesium dinitrate

• Monomagnesium dinitrate

• Magnesium nitrate

What is the correct formula for Ammonium phosphate?

• NH₄PO₄

• NH₄₃PO₄

• (NH₄)₃PO₄

• NH₄(PO₄)₃