C hapter 5, Section 2: Chemical Properties BY: PROFESSOR CALEB, PROFESSOR JORDAN, DR. MADDIE, DR. NOLAN, AND RAMON M.D.

What do you know about Chemical Properties? We want you to tell us! Do you know about acids and bases? Do you know any specific acids and bases? What are acids and bases?

A Complete Description of Chemical Properties: 1. Density - the physical property of matter can be found by dividing the matter's mass by its volume 2. State of Matter - gas, liquid, or solid 3. How It Reacts with Taste and Touch - How it feels and tastes; slippery and sour

Common Chemical Properties 1. Chemical Property- a chemical property is a characteristic of matter that allows it to change to a different type of matter Ex 1: Striking a match on a hard rough surface- match starts burning Ex 2: Half eaten apple turns brown due to oxygen

Choosing Materials 1. Gold vs. Iron - Who is better for jewelry? Gold doesn't rust in air, but guess what does? Iron! Iron rusts easily because of its REACTIVITY with oxygen and moisture that is in the air. 2. Reactivity - How easily one thing reacts with something else. 3. Gold and silver are two metals that have low reactivity therefore they don't rust.

Chemical Properties and Pools 1. The supposed "chlorine" in pools is actually a compound called hypochlorous acid, which forms when chlorine reacts with water. 2. Beneficial Properties of the Chlorine in Pools: -Kills bacteria - Kills insects - Kills plants and algae 3. Harmful Properties: - Irritates skin and eyes... That's why it your eyes burn when you open them underwater.

Chemical Properties of Acids and Bases 1. Physical Properties: -Slick to the Touch -Sour taste -Toxicity 2. Useful, but sometimes harmful.

Acids *1. Many acids react or corrode certain metals. Ex: Have you ever put spaghetti sauce in tin foil and saw a hideous sight? If you saw holes in it, then that is where the acid in the sauce melted the foil. 2. There are acids in tomato sauce, oranges, soda, etc. and they are edible. However, acids can damage plant and animal tissue. 3. Rain consists of small amounts of nitric acid and sulfuric acid, which results in acid rain. (Sulfuric acid is bad because it causes burns on skin that touch it) * From GA Science Textbook

Bases What is a base? A BASE, such as sodium hydroxide, can damage living tissue. 1. A concentrated base is as dangerous as a concentrated acid. Ex: Do you know how ammonia smells (think of bleach)? Well, it has this smell because it is a strong, dangerous base. So, no sniffy or touchy. 2. Why does ammonia feel slippery? It feels slipper because it reacts with the proteins in your fingertips and melts them, which results in damaged tissue.

Salts  What happens in reactions between acids and bases?*  Acids and bases are usually studied together because them react well with each other.  They can create useful things like...  - Water  - Salt  Salts are compounds made of metal and non-metal formed when acids and bases react with each other.  Table salt most common of salts.  Other salts are calcium, ammonium chloride, and chalk.