Ionic Compounds Quiz Flashcards
Compound
A compound is formed when 2 or more atoms/elements combine chemically. The atoms of different elements “stick” together by means of a bond
How do the atoms of different chemicals stick together?
By means of a bond
How many types of compounds are there and what are they?
2; Ionic and molecular/ covalent
What are the characteristics of binary ionic compounds
- Binary means made up of 2 elements
- Ionic means compound is formed between a metal and non metal
- A metal forms a positive ion
- A non metal forms a negative ion
True or false; opposite charges attract?
True
First step for writing the formula
Write down the symbol of the ions (obviously including the charge) . REMEMBER: THE POSITIVE ION COMES FIRST
Second step of writing the formula
Cross cross the numbers. The charges disappear. It also becomes subscript rather than superscript
What does subscript do?
Indicate how many atoms are present
Last step of writing the formula
“Clean it up”. Try to reduce if possible & remove any ones if they’re there
First step of naming ionic compounds
Write down the name of the first element. Which would be the positively charged atom aka the metal.
2nd step of naming ionic compounds
Give the second element an “ide” ending and add it.
Cation
Positively charged ion
Anion
Negatively charged atom
Multivalent elements
Metal elements that have more than 1 ionic charge (can have a diff # of valence electrons). Means you will have to add an extra step to naming them
How is the charge of multivalent cations indicated.
With Roman numerals
