Vocab (part 1)
the basic unit of a chemical element
Atom
the charge number of an atomic nucleus
Atomic number
a column of elements in the periodic table
Group
Formula for density
Density is equal to mass divided by volume
How many valence electrons does Lithium have?
1
a subatomic particle with a positive charge
Proton
the number of protons and neutrons in an atom
Mass number
a row of elements in the periodic table
Period
0.178 g/cm3
How many dots should be around a Lewis Dot Diagram of Krypton
8
a subatomic particle without a charge that is similar in mass to a proton
Neutron
The average mass of the stable isotopes of an element
Average atomic mass
any set of metallic elements in groups 4-12
Transition metals
The liquid you are using has a mass of 50g and reads at a volume of 100 mL. What is the density?
0.5 g/mL
What is the electron configuration of Ar?
1s2 2s2 2p6 3s2 3p6
the dense positively charged core of an atom that contains most of its mass
Nucleus
electropositive metals, generally reactive, in the 2 group
Alkaline earth metals
unreactive gas elements in group 18
Noble gases
The liquid you are using in your lab weighs 22g, you measured the empty beaker to be 2g. The beaker also measured the amount of liquid to be 20mL. What is the density of the liquid?
1g/mL
What is the electron configuration for Mn?
1s2 2s2 2p6 3s2 3p6 4s2 3d5
a subatomic particle with a negative charge
Electron
electropositive metals that are highly reactive, found in the group 1
Alkali metals
reactive nonmetallic elements in group 17
Halogens
The material delivered for an art project needs to be marble as per Ms.Lauren. Marble has a density of 8g/mL. You measure the block of material to be 50 cm by 80 cm by 20 cm. The mass is weighed out to be 10,000 grams. Was the correct material delivered?
Yes
What is the Shorthanded electron configuration of K?