Q: A voltaic cell uses what type of reaction to generate an electric current Read this paragraph and choose the correct option from the provided answers: A voltaic cell uses a spontaneous redox reaction to generate an electric current. It is also possible to do the opposite. When an external source of direct current is applied to an electrochemical cell, a reaction that is normally nonspontaneous can be made to proceed. Electrolysis is the process in which electrical energy is used to cause a nonspontaneous chemical reaction to occur. Electrolysis is responsible for the appearance of many everyday objects such as gold-plated or silver-plated jewelry and chrome-plated car bumpers. Choices: - spontaneous catalyst - chemical reaction - instantaneous redox - spontaneous redox A:
spontaneous redox

Q: What do you call a simple machine consisting of a sloping surface that connects lower and higher elevations? Read this paragraph and choose the correct option from the provided answers: An inclined plane is a simple machine consisting of a sloping surface that connects lower and higher elevations. The ideal mechanical advantage of an inclined plane is always greater than 1. Choices: - lever - wedge - jack - inclined plane A:
inclined plane

Q: What is the white solid that forms on corroded battery terminals? Read this paragraph and choose the correct option from the provided answers: Pb(s) + 2H+(aq) + SO42(aq) PbSO4(s) + H2(g) Lead(II) sulfate is the white solid that forms on corroded battery terminals. Exercise Using the activity series, predict what happens in each situation. If a reaction occurs, write the net ionic equation. Choices: - ammonia sulfate - copper sulfate - straight sulfate - lead sulfate A:
lead sulfate