Atoms
This particle has a negative charge and is found outside the nucleus.
What is an electron?
Elements in the same group share this in common.
What are valence electrons?
The bond formed when electrons are transferred.
What is ionic bonding?
The correct name for NaCl.
What is sodium chloride?
The state of matter with a definite volume but no definite shape.
What is liquid?
The sum of protons and neutrons in an atom.
What is mass number?
This element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁴.
What is sulfur?
A pair of electrons not involved in bonding.
What are lone pairs?
The formula for aluminum oxide.
What is Al₂O₃?
The subatomic particle that determines the identity of an element.
What is the proton?
Atoms of the same element with different numbers of neutrons.
What are isotopes?
As you move left to right across a period, atomic radius does this.
What is decrease?
The shape of a molecule with 4 bonding domains and 0 lone pairs.
What is tetrahedral?
Name the compound CO₂.
What is carbon dioxide?
The type of reaction that absorbs heat.
What is endothermic?
This model of the atom first proposed that electrons occupy distinct energy levels.
What is the Bohr model?
The energy required to remove an electron is known as this.
What is ionization energy?
Explain why water is a polar molecule.
What is the bent shape and unequal sharing of electrons?
Write the name for CuO (copper has multiple charges).
What is copper(II) oxide?
Balance the reaction: H₂ + O₂ → H₂O
What is 2H₂ + O₂ → 2H₂O?
When an atom becomes an anion, describe what happens to the electrons and the radius.
What is it gains electrons and the radius increases?
Explain why fluorine has a higher electronegativity than oxygen.
What is fluorine has a smaller radius and stronger nuclear pull on bonding electrons?
Identify the intermolecular force present between HF molecules that causes a high boiling point.
What is hydrogen bonding?
Determine the formula of iron(III) nitrate.
What is Fe(NO₃)₃?
This principle states that no two electrons in an atom can have the same set of four quantum numbers.
What is the Pauli Exclusion Principle?