an electron in the outer shell of an atom which can combine with other atoms to form molecules
What is Valence Electrons
100
any property used to characterize matter and energy and their interactions.
What is Physcial Property
100
compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions
What is Compound
100
The positively charged central core of an atom, containing most of its mass.
What is The Nucleus
100
A coherent, typically large body of matter with no definite shape
What is Atomic Mass
200
a simple chemical rule of thumb that states that atoms tend to combine in such a way that they each have eight.
What is Octet Rule
200
a property used to characterize materials in reactions that change their identity.
What is Chemical Property
200
A substance that takes part in and undergoes change during a reaction
What is Reactant
200
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.
What is Protons
200
The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
What is Atomic Number
300
-valence electrons are the outermost electrons of an atom, which are important in determining how the atom reacts chemically with other atoms
What is Bonding Electrons
300
A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity.
What is Metals
300
a unit of measurement for the amount of substance or chemical amount
What is Mole
300
A subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen
What is Neutrons
300
Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei
What is Isotope
400
any electron that is located in the valence shell that does not participate in bonding
What is Non-Bonding Electrons
400
a chemical element lacking typical metallic properties
What is Non Metals
400
a substance that is formed as the result of a chemical reaction
What is Product
400
A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids
What is Electrons
400
The electron configuration for an element is the arrangement of electrons in the orbits (or shells) of a neutral atom
What is Electron Configuration
500
Of, relating to, or denoting chemical bonds formed by the sharing of electrons between atoms.
What is Covalent
500
A principle stating that mass cannot be created or destroyed
What is Conservation Of Mass
500
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
What is Chemical Reaction
500
Ionization energy is the energy required to remove an electronfrom a gaseous atom or ion.
What is Ionization Energy
500
the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023