Atomic Structure and Bonding Flashcards
What is an element made up of
One kind of atom
What are molecules containing 2 atoms often described as
Diatomic
What is a compound
A substance formed when two or more elements have chemically joined
What is a mixture
A mix of substances that have not reacted together
What is filtration used for
To separate a solid from a liquid
What is evaporation used for
Used to separate a mixture of a dissolved solid in a liquid
What does soluble mean
A solid which will dissolve in water
What is insoluble
A solid which will not dissolve
What is a solution
A solid substance dissolves in a liquid
What is a solute
The solid which dissolves
What is a solvent
The liquid that does the dissolving
What is a dilute solution
Not very much solvent in the water
What is a concentrated solution
A lot of solute dissolved in the solution
What is a saturated solution
So much solute dissolved in the solution that no more can dissolve
Where are elements found
The periodic table
Where are the alkali metals
Group 1
Where are the halogens
Group 7
Where are the noble gases
Group 0
What is the block in the middle of the periodic table called
Transition metals
What are the two types of elements
Non-metal and metal
Are metals good conductors of electricity and heat
Yes
Are non-metals good conductors of electricity and heat
No
What can elements be classified as
Solid, liquids and gases
What does the atomic number tell us
The number of protons
What does the mass number tell us
The protons PLUS the neutrons
What is a atom with the same number of protons and different number of neutrons called
Isotopes
