
Simple Chemistry presents information and investigations on these six concepts: Objects can be described by the properties of the materials from which they are made. Substances can exist in different states-solid, liquid, or gas. Substances have characteristic properties. Mixtures can sometimes be separated into the original substances using characteristic properties. Elements are organized in the periodic table. When substances react chemically, they can form new substances.
| michael f stagliano stephen j dubner steve miller shivprasad koirala arthur charles clarke | steven grant paul theroux i m pandey lisa rao john b west |