Atoms and the Periodic Table
This colorful display caused by electrons releasing photons is unique to each element, similar to a fingerprint.
What is an emission spectrum?
The subatomic particle orbits the nucleus and can change energy levels if it absorbs or releases the exact right amount of energy.
What is an electron?
This number tells you the number of protons an atom has.
What is the atomic number?
This element has the same number of protons and neutrons. The atomic mass is 28.
What is silicon?
There are the items from this list that are an element but not a molecule: CaO, Ne, Li, N2, CO2, H
What are Ne, Li, and H?
An atom with 12 electrons shows metallic properties. This element is likely to show similar metallic properties.
What is Calcium or Beryllium?
This subatomic particle is responsible for the an atoms atomic number.
What is a proton?
This is the quantity of protons and neutrons in the nucleus.
What is the mass number?
What element has 27 Protons and 32 Neutrons?
What is cobalt?
Which of the following has the greatest kinetic energy: H2O (l), CO (g), NO (g), Na2O (s), SiO2 (s) and why?
What is CO and NO because they are in the gas state.
The reaction between sodium and chlorine in its gaseous state releases a great amount of energy. This atom is also likely release a great amount of energy when reacting with chlorine.
What is potassium (or lithium)?
A subatomic particle with no charge.
What is a neutron?
These atoms have different number of neutrons but the same number of protons making them the same element.
What is an isotope?
This element has the following Bohr model: 2 electrons in the innermost shell, 8 electrons in the middle shell, and 6 electrons in its outer most shell.
What is sulfur?
This is the weighted average of all isotopes of an element, not to be confused with the mass number!
What is the atomic mass?
This is a valence electron characteristic of group 14 elements
These subatomic particles comprise most of the mass of an atom.
What are protons and neutrons?
These type of electron transition(s) will result in light being released and list one example (from n= to n=).
What is a transition from a higher energy state to a lower energy state
This element has an electron configuration of 1s22s22p63s23p1
What is Aluminum?
An atom that has 7 valence electrons most likely belongs to this group on the periodic table
What is group 7 (or group 17)?
Name 3 patterns observed from the arrangement of the periodic table.
What is increasing number of protons, similar physical and chemical properties, and similar number of valence electrons?
These particular subatomic particles are responsible for the chemical reactivity of an atom.
What are valence electron?
This is one atomic structure characteristic that atoms in Group 14 have in common.
They have 4 valence electrons.
This element has a noble gas configuration of [Ne]3s23p3
What is Phosphorous?
An atom of arsenic has 33 electrons present in energy shells around the nucleus. This is correct number of electrons in each energy level.
What is 2, 8, 18, 5?