Compounds Flashcards
How do you represent a compound?
Using a chemical formula
What does the formula of a compound tell you?
Which elements are in a compound
The ratio of each element present
What is a chemical formula made up of?
Symbols of the elements in contains
A sub-script number telling you how many atoms of each element are in the compound
When naming a compound consisting of two elements, what suffix will you use?
-ide
When naming a compound, which element will come first?
Compound names go from left to right on the periodic table
Metal names will come first
When naming a compound that has two non-metal elements bonded together what should you do?
The left hand element will keep its name
The second element will end in ide
If the molecule has more than one atom of an element, indicate with a prefix
What is the prefix for 1?
mono
What is the prefix for 2?
di
What is the prefix for 3?
tri
What is the prefix for 4?
tetra
What is the prefix for 5?
penta
What is the prefix for 6?
hexa
What is the prefix for 7?
hepta
What is the prefix for 8?
octa
What must you do when you have a compound consisting of three elements?
Instead of ide, use ate
Do not use prefixes
What are metals like?
They are normally shiny, can be punted into a shape, drawn into threads and are good conductors of electricity and heat
What are non-metals like?
They are dull, brittle and are bad conductors of heat and electricity.
What are semi-metals like?
They share properties of both metals and non-metals
Where are the metals on the periodic table?
They are in the middle of the bold line
Where are the semi-metals on the periodic table?
They are on both sides of the bold zig-zag line.
What are periods?
They are the horizontal rows on the periodic table.
What are groups?
They are the vertical columns on a periodic table
What is the name for group one?
Alkali metals
What is the name for group two?
Alkali earth metals
What is the name for group seventeen?
Halogens
What is the name for group 18?
Noble gases
What is the area between the bold line called?
Transition metals
What are alkali metals?
They are extremely reactive
Most of them will react with water and explode on contact
They are one of the most unstable group on the periodic table
What are the halogens?
They are diatomic
What is diatomic?
Diatomic is when a single atom of that element will never be found on its own, it will always come in pairs. Hydrogen, Oxygen and Nitrogen are also diatomic
What are the noble gases?
They are the opposite of diatomic elements
They will not bond with anything
They are the most stable elements
What are transition metals?
They are elements that can have 1-4 electrons in their outermost layer.
How many electrons does Group 13 have in its outermost layer?
3
How many electrons does Group 14 have in its outermost layer?
4
How many electrons does Group 15 have in its outermost layer?
5
How many electrons does Group 16 have in its outermost layer?
6
How many electrons does Group 17 have in its outermost layer?
7
How many electrons does Group 18 have in its outermost layer?
8
Who created the periodic table?
Dmitri Mendeleev
What is the most malleable of metals?
Gold
What is the definition of a compound?
A compound is a molecule that is made up of two or more elements that is chemically bonded together in a fixed ratio.
