Vocabulary
This is the basic building block of all matter.
What is an atom?
An atom with an atomic number of 12 and a mass number of 25 can best be described by having ____ protons and ____ neutrons.
What is 12 protons and 13 neutrons?
Atoms of the same element with varying number of neutrons.
What are isotopes?
Using the periodic table, predict which of the following elements would share the most chemical properties with sulfur: Sodium, Iron, Neon, or Oxygen
What is oxygen?
The number of protons plus neutrons in an atom.
What is the mass number?
This is a subatomic particle with a negative charge and very little mass.
What is an electron?
Relative abundance and atomic mass of the naturally occurring isotopes of hafnium:
5% - 176 amu
19% - 177 amu
27% - 178 amu
14% - 179 amu
35% - 180 amu
What is the average atomic mass of hafnium?
What is 179 amu?
This is another name for the number of protons.
What is atomic number?
Particles that are smaller than the atom.
What are subatomic particles?
Name assigned to group 18.
What are noble gases?
This is an atom that has lost or gained electrons.
What is an ion?
How many protons does calcium have?
What is 20?
This is a horizontal row on the periodic table.
What is a period or series?
The electrons in the outermost orbital of an atom.
What are valence electrons?
Name assigned to Group 1.
This is a subatomic particle with no charge and a mass of 1 amu.
What is a neutron?
How many neutrons does Rubidium have?
What is 48?
This is a vertical column on the periodic table.
What is a group or family?
The electron configuration of an element is [Kr]5s1. Which of these elements would have similar chemical properties potassium, strontium, barium, or krypton?
What is potassium?
Name assigned to Group 17.
What are halogens?
This is a subatomic particle with a positive charge and a mass of 1 amu.
What is a proton?
How many electrons are in a neutral Aluminum atom?
What is 13?
A table of chemical elements arranged in order of atomic number.
What is the periodic table?
Sublevels present in the third energy level.
What are s, p, and d?
Name assigned to Group 2.
What are alkaline earth metals?