CHEMISTRY B - FINAL EXAM REVIEW Questions and Answers 100% verified

An atom has which of the following? - protons, neutrons, electrons The states of matter include which of the following? - solid, liquid, gas, plasma Endothermic reactions do which of the following? - absorb energy Exothermic reactions do which of the following? - release energy What is a heterogeneous mixture? - two or more substances that are variable and not uniform in composition What is a homogeneous mixture? - two or more substances that are uniform in appearance Which of the following is good definition for a compound? - two or more substances that are chemically combined Which of the following is good definition for a mixture? - two or more substances that are physically combined in the same container The pH of an acid is which of the following? - 1 to 6 pH (juices, stomach acid, citrus) The pH of a base is which of the following? - 8 to 14 pH (cleaning products) Entropy - Delta S the amount of disorder Enthalpy - Delta H the amount of heat Free Energy - Delta G the amount of spontaneousness If a solution is Neutral, then it has which of the following pH readings? - 7 (water) In a titration, which of the following can be achieved at the end point? - neutral solution, pH 7, acid + base = water and salt