Ions Flashcards
What is an ion?
When an electron is removed or added and thus becomes charged
Are atoms electrically positive, negative or neutral?
Atoms are always neutral
When an electron is removed from an atom, what is the charge?
If an electron is remove it becomes a positively charged ion
What is a cation?
When a electron is removed from an atom it a a cation
Where do most cations come from (atoms)?
Almost all cations come from metal atoms
How are Hydrogen ions formed?
Whenever an acid is dissolved in water
What is an important non-metallic cation?
Hydrogen
What is an anion?
An anion is produced when an atom gains electrons
What charge are anions?
Negative
Where do anions come from?
Non-metallic atoms.
What are ionic compounds?
When cations and anions comes together they form compounds which are called ionic compounds.
How do you write ionic compounds?
The name I the cation followed by the name of the anion
The total charge of ionic compounds always need to equal…
Zero, so it is equal
What is an ionic bond? and how?
When cations and anions stick together because they have opposite charges.
What are the features of ionic compounds?
They are hard, brittle and have high melting points
