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WorksheetsUnit 3: Vocab Practice
Total questions: 19
Worksheet time: 12mins
A substance that is formed as the result of a chemical reaction is a __________________
Product
Reactant
Starters
Enders
Atom
The smallest particle of an element; made of electrons, protons, and neutrons
A negatively charged subatomic particle located in the electron cloud; involved in the formation of chemical bonds
A pure substance composed of the same type of atom throughout
The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically
Atomic Mass
A neutrally charged subatomic particle located in
the nucleus of an atom; contributes to the mass of
the atom
A pure substance composed of the same type of
atom throughout
A positively charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
The mass of an atom, approximately equal to the number of protons and neutrons in the atom
Electron
A neutrally charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
A pure substance composed of the same type of atom throughout
A positively charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
A negatively charged subatomic particle located in the electron cloud; involved in the formation of chemical bonds
Element
A pure substance composed of the same type of atom throughout
A negatively charged subatomic particle located in the electron cloud; involved in the formation of chemical bonds
The electrons in the outermost energy level of an atom that influence how an element will react with other substances
A positively charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
Groups
A table in which all the known elements are arranged by properties and are represented by chemical symbols
The rows in a periodic table that classify the elements by the number of electron shells
The columns on a periodic table that arrange the elements by the number of electrons that are in the outermost shell; also called families
The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically
Neutron
A positively charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
The electrons in the outermost energy level of an atom that influence how an element will react with other substances
A neutrally charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
A negatively charged subatomic particle located in the electron cloud; involved in the formation of chemical bonds
Periodic Table of Elements
The rows in a periodic table that classify the elements by the number of electron shells
The columns on a periodic table that arrange the elements by the number of electrons that are in the outermost shell; also called families
The electrons in the outermost energy level of an atom that influence how an element will react with other substances
A table in which all the known elements are arranged by properties and are represented by chemical symbols
Periods
The rows in a periodic table that classify the elements by the number of electron shells
The columns on a periodic table that arrange the elements by the number of electrons that are in the outermost shell; also called families
A table in which all the known elements are arranged by properties and are represented by chemical symbols
The electrons in the outermost energy level of an atom that influence how an element will react with other substances
Proton
A neutrally charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
A negatively charged subatomic particle located in the electron cloud; involved in the formation of chemical bonds
A positively charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
A pure substance composed of the same type of atom throughout
Valence Electrons
A negatively charged subatomic particle located in the electron cloud; involved in the formation of chemical bonds
The electrons in the outermost energy level of an atom that influence how an element will react with other substances
A neutrally charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
A positively charged subatomic particle located in the nucleus of an atom; contributes to the mass of the atom
Number of protons and neutrons
Atomic mass
Atomic number
Octet rule
Subscript
Elements that are good conductors of electric current and heat, malleable, and ductile
Metals
Nonmetals
Metalloids
Halogens
Elements that are poor conductors of heat and electric current
Nonmetals
Metals
Metalloids
Noble gases
Elements that have properties of both metals and nonmetals
Metalloids
Metals
Nonmetals
Valence electrons
