Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/15

Click to flip

15 Cards in this Set

  • Front
  • Back
CaCl₂is called....
calcium chloride
H ₂O is called....
water
The little 2 in CaCl₂ is called a ...
subscript
What is the oxidation number of Ca in CaCl₂?
2+
What is the overall charge of CaCl₂?
Zero, since there is 1 Ca with a +2 and 2 Cl each with a -1.
[+2 + (-2) = 0]
Ammonium sulfate is written as....
(NH₄)₂SO₄
In (NH₄)₂SO₄ there are ___ N atoms, ___H atoms, __S atoms, and ___O atoms.
2N
8H
1S
4O
In (NH₄)₂SO₄, it takes ___ ammonium ions to balance 1 sulfate ion.
2
(NH₄)₂SO₄has ___ different polyatomic ions in it.
2
Na₃PO₄is called...
Sodium phosphate (NOT trisodium phosphate, which is written on many commercial labels.)
In Na₃PO₄, the oxidation number of sodium is....
1+
In Na₃PO₄, the oxidation number of phosphate is...
3-
The formula for magnesium hydroxide is written as...
Mg(OH)₂
In Mg(OH)₂, why is there a 2 after the (OH)?
Because the Mg is a 2+ while the hydroxide is just 1-
Why are there parentheses ( ) in Mg(OH)₂
OH is a polyatomic ion and you must show that there are two of them.