Match the term with its description. Acid A) A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water
Base B) Used to measure the pH of substances by determining their hydrogen ion concentration
pH C) A compound that increases hydroxide ions (OH−) when it is dissolved in a solution
Litmus paper D) A compound that increases hydrogen ions (H+) when it is dissolved in a solution

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation