Some compounds are classified as acids or bases . the ph scale shows how acidic or how basic these compounds are the lower the ph the more acidic a compounds is the higher the ph the more basic it is . sodium hydroxide a compound commonly found in drain cleaners has a ph of about 13. which of these phrases describe sodium hydroxide

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?