who Am I Flashcards
Who am I? I am the basic unit of matter, composed of protons, neutrons, and electrons.
An atom.
Who am I? I have a positive charge and am found in the nucleus of an atom.
A proton.
Who am I? I have no charge and am also located in the nucleus of an atom.
A neutron.
Who am I? I have a negative charge and orbit the nucleus of an atom.
An electron.
Who am I? I determine the chemical properties of an element and its place on the periodic table.
The number of protons (atomic number).
Who am I? I am the sum of protons and neutrons in an atom’s nucleus.
The atomic mass.
Who am I? I can vary in number among atoms of the same element, creating isotopes.
Neutrons.
Who am I? I am an atom that has gained or lost one or more electrons.
An ion.
Who am I? I am the term for atoms of the same element that have different numbers of neutrons.
Isotopes.
Who am I? I exist when two or more atoms bond together.
A molecule.
Who am I? I am a table that organizes all known elements by their atomic number, electron configuration, and recurring chemical properties.
The periodic table.
Who am I? I can be found in the outermost shell of an atom and are responsible for chemical bonding.
Valence electrons.
Who am I? I am the force that holds protons and neutrons together in the nucleus.
The strong nuclear force.
Who am I? I am a type of bond formed when atoms share electrons.
A covalent bond.
Who am I? I am a type of bond formed when one atom donates an electron to another atom.
An ionic bond.
Who am I? I am the energy required to remove an electron from an atom.
Ionization energy.
Who am I? I am the process by which an atom or molecule loses electrons, often forming a cation.
Oxidation.
Who am I? I am the process by which an atom or molecule gains electrons, often forming an anion.
Reduction.
Who am I? I am the region around the nucleus where electrons are likely to be found.
An electron cloud.
Who am I? I am the principle that explains why electrons occupy the lowest energy levels first.
The Aufbau principle.
Who am I? I am a chart that shows the distribution of electrons in an atom’s orbitals.
An electron configuration.
Who am I? I am the phenomenon where atoms emit or absorb energy in the form of light when electrons transition between energy levels.
Atomic emission or absorption spectra.
Who am I? I can be a solid, liquid, or gas at room temperature, depending on the type of element.
An element.
Who am I? I am an atom with an atomic number of 1.
Hydrogen.
Who am I? I am the smallest particle of a substance that retains its chemical properties.
A molecule.
Who am I? I am a negatively charged ion.
An anion.
Who am I? I am a positively charged ion.
A cation.
