Vocabulary 1
What is the mass of an atom approximately equal to the number of protons and neutrons in the atom?
Atomic Mass
What is a number placed in front of a chemical symbol or formula that represents the number of molecules?
Coefficient
What is a substance produced during a chemical reaction? (On the right side)
Product
What is a substance that takes part in and undergoes change during a chemical reaction? (On the left side)
Reactant
What is the ability of a system to do work?
Energy
What is the number written below and to the right of a chemical symbol that shows the number of a specific type of atom present?
Subscript
What is a symbolic representation of a chemical reaction in which both sides of the equation contain equal numbers of atoms of each element?
Balanced Chemical Equation
What is energy of motion?
Kinetic Energy
What is the measure of how much matter is present in a substance?
Mass
What is energy that is stored in a system or object?
Relative Position
What is the rate of change of position (or distance traveled) with respect to time?
Speed
What are chemical formulas and symbols written to represent a reaction?
Chemical Equation
What is a group of interacting, interrelated, or interdependent elements forming a complex whole?
System
What is a negatively charged subatomic particle?
Electron
What is a positively charged subatomic particle?
Proton
What are the columns on a periodic table that arrange the elements by the number of electrons that are in the outermost shell; also called families?
Groups
What is the subatomic particle that has "no charge?"
Neutron
What is a shorthand notation that uses chemical symbols and numbers as subscripts to represent the type and number atoms that are present in the smallest unit of a substance?
Chemical Formula
What is a table in which all the known elements are arranged by properties and are represented by chemical symbols?
Periodic Table of Elements
What are rows in a periodic table that classify the elements by the number of electrons shells?
Periods
What is a change the involves one substance being pulled apart or combined with another substance to form a completely different substance or substances?
Chemical Change
What is a change to a substance that occurs without forming a new substance, such as a change in size or state of matter?
Physical Change
What is an insoluble solid formed from a chemical reaction?
Precipitate
What is the ability of a chemical substance to undergo a chemical reaction?
Reactivity