The Old Stuff
How many significant figures are in the measurement 603.040 g?
Five
A subatomic particle with no charge.
What is a neutron?
The name for the electrons in the outer energy level.
What are valence electrons?
Rows on the periodic table (side to side)
What are periods?
Arsenic (As) has 33 of these.
What are protons or electrons?
The theory that states "all atoms of the same element are the same."
What is Dalton's Atomic Theory?
Subatomic Particle with a negative charge
What is an electron?
The location of electrons.
What is the electron cloud?
Columns (up and down) on a periodic table
What are groups?
The number of protons in an atom of calcium (Ca).
What is 20?
What is the mass number of an atom which contains 30 protons, 30 electrons, and 34 neutrons?
Subatomic particle with a positive charge
What is a proton?
The maximum number of electrons the 1st orbital, or energy shell, can hold.
What is 2?
The atomic number is equal to this
What is the number of protons (and electrons) an atom of an element has?
The number of neutrons in an atom of neon (Ne) with a mass number of 21.
What is 11.
The repeatability of a measurement describes its ________.
The location of protons and neutrons.
What is inside the nucleus?
The maximum number of electrons the 2nd orbital, or energy shell, can hold.
What is 8.
The formula for finding the neutrons of an atom.
What is atomic mass - atomic number?
The number of energy orbitals in an atom of lithium (Li).
What is 2?
Convert 459 L into milliliters (mL).
4.59 x 105 mL
The subatomic particle with no mass
What is the electron.
Elements in the same group share this.
What are the same number of valence electrons
The majority of the elements on the periodic table are this.
What are metals?
The number of valence electrons in an atom of chlorine (Cl).
What is 7?