Chemistry Flashcards
What is Avogadro’s Number?
6.022 x 10 to the 23rd power
Used for finding how many atoms are in a mol of something
What are the 2 things the universe is made of?
Matter and Energy
What is matter?
Anything that has mass and takes up space
What is energy?
The ability to cause matter to do something
What is the conservation of energy?
Matter/Energy can not be created or destroyed, but it can change forms
What 3 parts build up an atom?
Protons (+), Neutrons (Neutral), Electrons (-)
What does the number of protons determine?
Which atom is which
What are atoms?
The smallest complete unit of matter
What is matter made of?
Atoms
Where are protons and neutrons found?
In the center. They make up the core/nucleus of the atom
Where are electrons found?
They are found on the outside of the shell.
What is the valence shell and what does it do?
The outer layer of electrons and is used to bond with other atoms to make molecules.
What is a covalent bond?
When atoms share electrons
What is an ionic bond?
When an atom takes or gives electrons to another
What is a polar covalent bond?
It is similar to a covalent bond, except one atom is bigger than the other, so the electrons spend more time around one, making it negative and making the other positive.
