| A | B |
|---|
| Involved in all chemical reactions | energy changes |
| Energy must be taken in | to break old chemical bonds |
| Energy is given off when | new chemical bonds form. |
| If more energy is taken in than given off | the chemical reaction absorbs energy |
| If more energy is given off than taken in | the chemical reaction releases energy |
| Burning of logs, apples browning, silver tarnishing, metal rusting | energy being given off in the form of heat |
| The combining of hydrogen with oxygen to form water | synthesis reaction |
| when water breaks down, hydrogen and oxygen are released | decompostion reaction |
| when iron workers use carbon to seperate iron from iron oxide | single replacement reaction |
| the formation of silver chloride | double replacement reaction |
| produces or yields | the arrow in a chemical eqation |
| conservation of mass law | "matter and energy cannot be created or destroyed, only changed" |
| Give foods a sour, sharp flavor | acids |
| citrus fruits, vinegar, soda water, apples, spinach | weak acids |
| burn your skin and are poisonous | strong acids |
| the amount of hydrogen ions released in water | determines the strength of an acid |
| an acid will turn blue litmus | red |
| a base will turn red litmus | blue |
| bitter,slippery compounds | bases |
| lye, drain cleaner | stron bases |
| released in water by bases | hyderoxide ions |
| hydroxide ions contain this, but hydrogen ions donot | oxygen |
| acid produced in the stomach which has a ph between 1 and 2 | gastric acid |
| an example of a nuetralization process | an anacid relieving an upset stomach |
| the most important chemical compounds | salts |
| provides a rough surface so vehecles do not slide | sand |
