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Final Study Guide
Final
| Term | Definition |
|---|---|
| Bubble of gas appear | When alka seltzer is dropped into water , carbon dioxide , sodium cit rate, and water is produced. The escaping carbon dioxide is what creates the fizz. |
| Precipitate Forms | One of the more common signs of a chemical reaction. A solid that forms from a solution or another solid. |
| Color change | Changing a chemicals pH can change its color. Going from scid to base or base to acid is a chemical change that usually results in the changing of color |
| Temperature Change | In most reactions the temperature increases without being heated by an outside force. |
| Light is emitted | When bending a glow stick, a chemical process is started. |
| Change in smell/ Taste | Usually the result of decomposition of a food, organism , or chemical. |
| Melting change from solid to liquid | Freezing change from liquid to solid |
| Evaporation change from liquid to gas | Condensation change from gas to liquid |
| Sublimation change from solid to gas | |
| Endothermic | A reaction that absorbs heat energy is called called an endothermic reaction. |
| Exothermic | Is a chemical reaction that produces heat. |
| Acids turns red | Taste sour |
| Base turns blue | Bases are bitter |
| Motion | A change in the position of an object compared to another object. |
| Catalyst | Margarine is created through the process of hydrogenation , and liquid oil is converted to solid flat. |
| Kinetic Energy Formula | 1/2 (mass) x Velocity2 |
| Alternating Current | Electricity flows in two direction |
| Acceleration due to gravity | The change in velocity caused by a gravitational force. |
| Covalent Bonds | Forms when atoms share electrons. They form between to nonmetals |
| Law of conservation of mass | A fundamental principle of science stating that mass cannot be created or destroyed. |
| Amplitude | Height or strength of a wave. |