Chemistry Semester Exam

Ionic compounds are written with

• cation (+ ion) first then anion (- ion)
• anion (- ion) first then cation (+ ion)
• either way is fine
• polyatomic ions first

Ba⁺², Br^-1

• BrBa
• Br₂Ba₂
• BaBr₂
• Br₂Ba

Tags

NGSS.MS-PS1-1

The name of FeCl₂ is

• iron chloride
• iron (II) chloride
• iron (I) chloride
• iron dichloride

What is the correct name for HBr?

• Bromic acid
• Hydrobromic acid
• Hydrogen bromate
• Hypobromic acid

When adding a subscript to a polyatomic ion, you should...

• multiply any subscripts on the polyatomic ion by the subscript you are adding
• put parentheses around the polyatomic ion before adding a subscript
• write the new subscript next to any subscripts on the polyatomic ion
• put the polyatomic ion in square brackets before adding the subscript

What is the correct formula for dinitrogen tetroxide?

• N₃O₃
• (N₂)₂(O₄)₃
• N₂O₄
• N₄O₂

Tags

NGSS.MS-PS1-1

What is the correct formula for carbon dioxide?

• C₂O₂
• C₂0
• CO
• CO₂

Tags

NGSS.MS-PS1-1

What is the correct name for CCl₄?

• carbon tetrachloride
• monocarbon tetrachloride
• tetracarbon monochloride
• carbon chloride

 Ionic compounds must have...

• a metal and a polyatomic ion
  
• a cation and an anion
• only nonmetals
• only metals

What is the name of " NO₂^1- "?

• nitrogen dioxide
  
• nitrate
  
• nitrite
• nitrogen (II) oxide