conclusion on household chemicals of 100 words
Answers
Explanation:
Background Information
When!most!people!hear!the!word!“acid,”!they!think!of!something!very!dangerous!that!can!dissolve!
metal!and!burn!skin.!In!fact,!many!acids!are!not!dangerous!at!all.!!Some!are!even!found!in!the!foods!we!
eat!!!Any!food!that!tastes!sour!is!acidic.!For!example,!vinegar!in!salad!dressing!is!acetic!acid,!oranges!and!
lemons!contain!citric!acid,!and!apples!contain!malic!acid.!!Vitamin!C!is!an!acid,!ascorbic!acid.!
Bases!are!also!found!in!common!household!products.!Bases!can!be!very!strong!and!dangerous,!or!weak!
and!safer!for!use!around!the!house.!Lye!or!washing!soda!are!very!strong!bases.!Weaker!bases!are!often!
used!as!cleaning!products,!like!household!ammonia!used!to!clean!windows.!!We!don’t!find!many!bases!
in!our!foods!because!they!taste!bitter—think!about!the!taste!of!soap!!
Chemists!use!a!scale!known!as!the!pH&scale!to!indicate!the!amount!of!acid!or!base!present!in!a!solution.!!
The!pH!scale!goes!from!1G14.!!Neutral!substances!have!a!pH!of!7.!!A!pH!less!than!7!is!an!acid,!with!lower!
numbers!indicating!stronger!acids.!!A!pH!greater!than!7!is!a!base,!with!higher!numbers!indicating!
stronger!bases.!!
A&universal&indicator!(such!as!Bogen’s!universal!indicator)!identifies!pH!by!
turning!a!rainbow!of!colors:
• Red!(acids!of!pH!~2G4)
• Orange!(acids!of!pH!~5)
• Green!(pH!~6G7)
• Blue!(pH!~9)
• Purple!(pH!~10!and!up)
If!an!acid!and!base!are!mixed!in!equal!amounts!they!react!together!to!make!
a!salt!and!water