Chris+Steeley

> > **Physical and Chemical Properties and Changes**
 * lololololo
 * [[image:steeley1.png width="800" height="446"]]
 * [[image:steeley1.png width="800" height="446"]]
 * [[image:steeley1.png width="800" height="446"]]
 * [[image:steeley1.png width="800" height="446"]]
 * [[image:steeley1.png width="800" height="446"]]
 * ||  || [[image:nahsphysicalscience:1983r.jpg width="29" height="17"]]Mini Car! ||
 * 1983r.jpg ||  ||
 * 1983r.jpg ||  ||
 * 1983r.jpg ||
 * 1983r.jpg ||


 * ||  || [[image:nahsphysicalscience:7-1.jpg width="318" height="249" caption="7-1.jpg"]] ||
 * 7-1.jpg ||  ||
 * 7-1.jpg ||  ||
 * 7-1.jpg ||


 * ||  || [[image:nahsphysicalscience:acid-rain-2a.jpg width="345" height="345" caption="acid-rain-2a.jpg"]] ||
 * acid-rain-2a.jpg ||  ||
 * acid-rain-2a.jpg ||  ||
 * acid-rain-2a.jpg ||


 * ||  || [[image:nahsphysicalscience:1161_rusty_car.jpg width="394" height="264" caption="1161_rusty_car.jpg"]] ||
 * 1161_rusty_car.jpg ||  ||
 * 1161_rusty_car.jpg ||  ||
 * 1161_rusty_car.jpg ||

The color of this Monte Carlo is a **physical property**.

A **physical change** takes place when the car is painted black. The plastic body of the car is still the same substance after the color is changed. We could even melt that plastic into a liquid, and it would still be the same substance because a phase change is also considered a physical change. See the thing is, as long as the chemical composition remains the same, a chemical change has not occurred.

other physical properties include: size, shape, texture, odor, etc.

Corrosivity is a **chemical property** of acid rain water.

When acid rain water reacts with certain metals, a **chemical change** takes place (rusting) and the acid rain + metal forms a **new substance** (rust). Other chemical properties include: flammability, reactivity, pH balance, etc.

Here is the balanced chemical equation showing that Iron, Oxygen, and Water react to form a new substance....rust. 4Fe + 3O2 + 6H2O ---> 4Fe(OH)3