be able to read a pH scale, and understand what it represents describe the properties of acids and bases describe neutralization

Intro to pH, acids, & bases Watch the video: https://www.youtube.com/watch?v=3U9n4BV2618 Read the information on the link: http://www.ducksters.com/science/acids_and_bases.php

Properties of Acids Many common items contain acids. Acids are compounds with specific characteristic properties. Has more hydrogen atoms Reacts with metals Reacts with carbon (seashells, eggs, chalk, limestone) Turns pH paper red, orange, and yellow Corrosive- able to break down other substances Tastes sour (lemons, grapefruit, oranges, vinegar, tomatoes)

Properties of Bases Many common items contain bases. Bases are often described as having properties opposite of acids. Has more hydroxide molecules Doesn't react with metals Turns pH paper green, blue, and purple Feel slippery (soaps, detergents, shampoo) Tastes bitter (melons, almonds, cocoa beans)

(Basic) To determine the strength of an acid or base, chemists use a scale called pH. It ranges from 0-14. The most acidic substances are found at the low end of the scale (0-6). The most basic substances are found at the high end (8-14). A pH of 7 represents an item that is neither acid or base- neutral. Ex: water

(Basic) Neutralization- A reaction between an acid and a base. After mixing an acid with a base, the mixture is not as acidic or basic as the individual starting solutions were. The reaction may even result in a neutral solution. The final pH depends on the concentrations and strengths of the reactants. For example, a small amount of a strong base reacts with a very large amount of strong acid. The solution will remain more acidic, but closer to neutral than the original pH.

More on pH, acids, & bases pH Scale Virtual Labs: http://virtuallabs.nmsu.edu/ph.php http://www.glencoe.com/sites/common_assets/science/virtual_labs/E22/E22.html https://www.brainpop.com/games/virtuallabsphscaleandmetercalibration/ Higher level reading links (optional): http://www.chem4kids.com/files/react_acidbase.html http://www.chem4kids.com/files/react_acidbase2.html