Exam (elaborations) Honors Chemistry

A ________ is the process by which one or more substances are changed into one or more different substances.️️chemical reaction A ___________ represents, with symbols and formulas, the identities and relative molecular or molar amounts of the reactants and products in a chemical equation.️️chemical equation What are the four ways to tell if a chemical reaction has occurred?️️evolution of energy as heat and light, color change, production of gas, and the formation of a precipitate A solid that is produced as a result of a chemical reaction in solution and that separates from the solution is known as a __________.️️precipitate What is sulfur usually written as?️️S₈ What is phosphorus usually written as?️️P₄ What are the seven diatomic molecules?️️hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine To balance numbers of atoms, add __________ where necessary.️️coefficients A _________ is a small whole number that appears in front of a formula in a chemical equation.️️coefficient A _____________ is an equation in which the reactants and products in a chemical reaction are represents by words.️️word equation A ___________ represents the reactants and products of a chemical reaction by their symbols or formulas.️️formula equation The relative amounts of reactants and products represented in the same equation must be adjusted so that the numbers and types of atoms are the same on both sides of the equation. This process is called ___________ and is carried out by inserting coefficients.️️balancing an equation What symbol is used to indicate a precipitate?️️↓ What symbol is used to indicate and aqueous solution?️️aq What is the term meaning the ability to dissolve in water?️️aqueous What is another symbol, besides g, to indicate a gaseous product?️️↑ What is the formula for a catalyst?️️MnO₂