Atomic Adventures
The number of protons in an atom.
What is the atomic number?
Elements in the same column have the same number of these.
What are valence electrons?
Bond formed by the transfer of electrons.
What is an ionic bond?
The unit used to measure the amount of particles in a substance.
What is a mole?
Simplest whole-number ratio of atoms in a compound.
What is an empirical formula?
Particles found in electron clouds rather than fixed paths.
What are electrons?
Metals are mostly found on this side of the periodic table.
What is the left side?
A “sea of mobile electrons” describes this type of bonding.
What is metallic bonding?
The number of particles in one mole.
What is 6.02 × 10²³?
Percent by mass of an element in a compound.
What is percent composition?
Atoms of the same element with different numbers of neutrons.
What are isotopes?
Atomic radius generally decreases when moving in this direction.
What is left to right across a period?
Type of bond between two nonmetals.
What is a covalent bond?
The element with the greatest mass per mole: Fe, Cu, or Zn.
What is zinc?
A compound with low melting point has relatively ___ IMF
What are weak intermolecular forces?
The energy released when an electron falls to a lower energy level.
What is emitted light (emission spectra)?
The periodic table is arranged by increasing atomic___________.
What is number?
Strongest intermolecular forces among HF, HCl, HBr, and HI.
What is HF?
Molar mass of Ba(NO₃)₂
What is 261 g/mol?
Formula that shows the actual number of atoms in a compound.
What is a molecular formula?
The total number of electrons in a sulfur atom with a charge of 3+
What is 13?
The element that rarely bonds because it has a full valence shell.
What is argon (or a noble gas)?
A molecule with unequal sharing of electrons.
What is a polar covalent molecule?
Number of moles in 3.0 × 10²³ atoms of neon.
What is 0.5 moles?
A compound has the molecular formula C₂H₄O₂. Determine the percent by mass of carbon.
What is 40%?