ATOMS
Define atom
The smallest unit of an element that retains its chemical properties
Define “element”
substance that cannot be broken down by ordinary chemical means
What is an orbital
Area around a nucleus where an electron is likely to be found
What is a molecule?
Groups of atoms held together by energy in a stable association
There are two types of covalent bonds, true or false?
True, polar and non polar
What are the three subatomic particles
Electrons
Protons
Neutrons
Explain the parts of an element in the periodic table
What are the different shapes for orbitals
S, p, d, f
What is a compound?
Molecule that contains atoms of more than one element
Define electronegativity
Atom’s affinity for electrons (the strength of attraction for electrons )
What is the nucleus composed of
Protons and neutrons
What is the difference between atomic number and atomic mass
Atomic number is number of protons, atomic mass is summed mass of protons and neutrons
Define energy
Capacity to cause change by doing work
Name the main three types of bonds
Ionic, covalent, hydrogen
What is the difference between polar and non polar
Where are electrons found in the atom
What is an isotope
Atoms of an element that have different number of neutrons.
what is the octet rule?
Atoms will loose or gain valence electrons to fill valence shell with 8 electrons
What are the two types of ions?
Are hydrogen bonds strong or weak?
Hydrogen bonds are weak bonds formed between polar molecules
What are the charges of the subatomic particles
What are valence electrons
Electrons found in the outermost energy level/shell
Valence shells can contain any number of electrons, true or false?
False, valence shell cannot contain more than 8 electrons
When are covalent bonds formed?
When two atoms share one or more pairs of valence electrons
Hydrogen molecules are the most stable bond, true or false?
False, they are too weak to form stable molecules by themselves.