CHM 1020 - Final Exam Study Guide | Questions and Correct Answers | Latest Update 2024/2025 | Graded A+

CHM 1020 - Final Exam Study Guide | Questions and Correct Answers | Latest Update 2024/2025 | Graded A+ The quantity 0.0000064 g expressed in scientific notation is ___________. - Answer -6.4 x 10^-6 A substance that can be broken down into 2 or more simpler substances only by chemical methods is called a(n) - Answer -compound Which is not a mixture? - Answer -sodium chloride which substance is an element? - Answer -N2 The majority of new smartphones being released have displays that are at least 5.00 inches in size. What is this size in centimeters? (There are 2.54 cm in one inch.) - Answer -12.7 cm which one of the following is a subatomic particle located in the center of the atom and has a positive charge? - Answer -Proton What are the three pillars of sustainability? - Answer -Environmental, social, economicOxidation and reduction of atoms involves a change in the number of __________ in the atom. - Answer -Electrons One of the lightest smartphones on the market today weighs 113 g. To protect your phone, you may want to use a screen protector, which weighs 27.2 g, and a heavy duty case which weighs 114 g. What is the total weight of the phone, screen protector, and case? - Answer -254 g 2.3 x 10^6 meters is the same ___________