Standard+4+Part+2+Chemical+Reactions


 * Standard 4, Part 2: Essential Questions **


 * 1) What actually occurs in a chemical change?
 * 2) What would provide evidence that a chemical change has occurred?
 * 3) What is the result of a reaction between an active metal and an acid?
 * 4) What is the result of a reaction between an acid and a base (a neutralization reaction)?
 * 5) What is a physical change?
 * 6) What is the key that distinguishes between a chemical and a physical change?
 * 7) What is a chemical equation?
 * 8) What and where are the reactants in a chemical equation?
 * 9) What and where are the products in a chemical equation?
 * 10) What is a balanced chemical equation?
 * 11) What is the law of conservation of mass and how is it related to chemical reactions and chemical equations?
 * 12) What is the one constant in all chemical reactions?
 * 13) What is an exothermic reaction?
 * 14) What is an endothermic reaction?
 * 15) How would you determine whether an endothermic or exothermic reaction occurred?
 * 16) What is the observable evidence that a chemical reaction may have occurred?
 * 17) What is the observable evidence that a physical change has occurred?
 * 18) If chemical and physical changes can both produce similar observable evidence, how can you determine for certain what has occurred?
 * 19) What is a precipitate?
 * 20) What is the difference between evidence and proof?
 * 21) What is a coefficient?
 * 22) What is a synthesis reaction?
 * 23) What is a decomposition reaction?
 * 24) How do you balance a simple equation for a synthesis or decomposition reaction?
 * 25) What is a single replacement (or displacement) reaction?
 * 26) What is a double replacement (or ionic exchange) reaction?
 * 27) How would you recognize that a single or double replacement reaction was balanced?
 * 28) In terms of the kinetic theory of matter, why do chemical reactions occur?
 * 29) What is the reaction rate of a chemical reaction?
 * 30) What are the factors that affect reaction rate?
 * 31) How and why does temperature affect reaction rate?
 * 32) How and why does concentration affect reaction rate?
 * 33) How and why does surface area affect reaction rate?
 * 34) What is a catalyst?
 * 35) What is activation energy?
 * 36) What happens to a catalyst in a chemical reaction?