Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
PS Chap 7: Reactions
PS Chapter 7: Chemical Reactions Coach Leach
| Term | Definition |
|---|---|
| chemical reaction | A process that rearranges the atoms in one or more substances into one or more new substances. |
| chemical equation | A combination of chemical formulas and symbols that models a chemical reaction. |
| reactant | A substance that enters into a chemical reaction. |
| product | A substance that is formed during a chemical reaction. |
| decomposition reaction | A chemical reaction in which a single reactant breaks down into two or more products. |
| single replacement reaction | A chemical reaction in which one element in a compound is replaced by another element; also known as a single displacement reaction. |
| double replacement reaction | A chemical reaction in which two compounds swap cations or anions with each other; also known as a double displacement reaction. |
| exothermic reaction | A chemical reaction that releases more thermal energy than it absorbs. |
| endothermic reaction | A chemical reaction that absorbs more thermal energy than it releases. |
| coefficient | A number placed in front of a chemical formula within a chemical equation that shows how many units of a reactant or product are needed to balance the chemical equation. |
| mole | SI fundamental unit for the quantity of matter in a substance. |
| molar mass | The mass of one mole of a substance. |
| synthesis reaction | A chemical reaction in which two or more reactants combine into a single, more complex product. |
| combustion | An exothermic chemical reaction in which a fuel reacts with oxygen. |
| oxidation | A loss of electrons in a chemical reaction. |
| reduction | A gain of electrons in a chemical reaction. |
| activation energy | The minimum energy needed for a chemical reaction to occur. |
| law of conservation of energy | The law that states that energy cannot be created or destroyed but only transferred between objects or transformed; also known as the first law of thermodynamics. |
| collision model | The model that states that for a reaction to occur, the reactant particles must collide with each other, with the proper alignment, and with enough energy. |
| reaction rate | The speed of a reaction. |
| catalyst | A substance that helps a reaction happen faster but is not used up in the reaction. |
| inhibitor | A substance that slows the rate of a reaction by reducing the effectiveness of catalysts. |
| reversible reaction | A reaction in which the products can react together to re-form the original reactants. |
| chemical equilibrium | The state that occurs when forward and reverse reactions each happen at the same rate. |
| Le Chatelier's principle | The principle that states that a chemical system in equilibrium will adjust its equilibrium position in such a way as to reduce the effect of any changes made to the system. |
Created by:
CoachLeach
Popular Physical Science sets