What's the Measure?
1.400 x 10^-3
What is an element?
Any substance that cannot be broken down into simpler components.
What's the difference between an atom and a molecule?
An atom is an element, found on the periodic table.
A molecule is more than one atom bonded together to form a compound.
What is a homonuclear diatomic molecule?
Atoms that pair up when left to themselves.
What are the four phases?
Gas
Liquid
Solid
Plasma
Convert 34.5 kL into L.
34,500L or 3.4x10^4L
What does an atomic number tell us?
How many protons are in an atom
How many protons, electrons, and neutrons are in Potassium?
Protons: 19
Electrons: 19
Neutrons: 20
What is the acronym we use to remember the homonuclear diatomic molecules?
Have No Fear Of Ice Cold Beer.
What is required to move from one phase to another?
Energy
Convert 98.6 degrees F to K.
310.2 K
What is an element's "mass number"?
The total number of neutrons and protons in an atom
What is the electron configuration of P?
1s(2),2s(2),2p(6),3s(2),3p(3)
What are the Elements in that acroynm?
Hydrogen
Nitrogen
Fluorine
Oxygen
Iodine
Chlorine
Bromine
More rarely used - Astatine is another one...
If the arrow is pointing to the right, on which side of a chemical equation is the reactants?
Left side
Convert .00045 kg to mg.
450 mg
What does the jagged line on the periodic table signify?
Separates the periodic table into two classes: metals and non-metals.
Bonus: there's one item to the left that is considered a non-metal... which is it?
linear
trigonal
tetrahedral
pyramidal
bent
The electrons are equally distributed throughout the molecule in a nonpolar. In a polar, there is an imbalance, so there is an electrical charge.
In a chemical equation, what is listed on the right side?
Products
How many significant figures does the number 0.0032800 have?
5 digits.
What is an isotope?
Atoms with the same number of protons but different numbers of neutrons.
How can you tell a covalent molecule from ionic molecule?
Covalent have all nonmetal atoms. Ionic is made up of at least 1 metal and 1 nonmetal atoms.
Draw a lewis structure of NH(3).
H
|
H-N:
|
H
For example, CO(2) - what is the little "2" called?
Subscripts