Chemical bonds
This molecular shape has
4 electron domains
- 3 bonding pairs, 1 lone pair
Trigonal pyramidal
Small number immediatly following an element
what is a subscript
melting point of water
What is 0o C
This labware is the best for measuring amounts of liquids
What is a graduated cylander
Protons and neutrons are made of these?
What are quarks?
what is NH4
ammonia
Molar mass of water
What is 18.02 grams per mol
solid to gas
what is sublimination
Define Molarity
moles of solute per liters of solution
AM of 16 oxygen atoms
256
what is a diatomic element
when 2 elements exist naturally as a molecule
Large number before an element
What is a coefficient?
critical temp definition
temp at which a substance cannot exist in liquid form
Define molality
moles of solute divided by kg of solvent
why do elecrons not fall into the nucleus
they stay in their energy levels
difference between a ionic and covalent bond
ionic- Electons being transferred
covalent-electrons being shared
How many molecules are in 1 mole of hydrochloric acid?
What is 6.022 x1023 molecules
definite shape and volume
solid
How many cm in a meter
what is 100 cm
why do elements have masses different from atomic numbers
neutrons
what is the prefix for 9
nona
Consider
2H2O --> O2 + 2H2
How many moless of H2 are made from each mole of water
what is ONE
STP means what
What is Standard temp and pressure
This is used to measure mass
What is a scale or a triple beam balance
What are the three main subatomic particles in an atom, and what charge does each have?
Protons → positive charge (+)
Neutrons → no charge (neutral)
Electrons → negative charge (-)