| A | B |
|---|
| chemical change | a substance changes into a new and different substance |
| physical change | a change in the substance where it changes form but not substance- ice to water |
| reactions | chemical changes |
| synthesis or combination reactions | involve 2 or more reactants that combine to create a new product |
| single replacement reactions | an element reacting with a compound |
| double displacement reactions | the positive ions in each compound switch positions |
| acid-base reactions | double displacement reaction where the products are always salt and water |
| nuetralization reactions | when products are neutral neither an acid or a base |
| pH scale | to identify the strength of an acid or a base |
| pH below 7 | acidic |
| pH above 7 | base |
| pH of 7 | neutral |
| acid base indicator | substance that changes color in an acid or a base |
| decomposition reactions | reactant that is broken down into 2 or more simpler products |
