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Physical Science
Question | Answer |
---|---|
What is a Reactant? | A substance that undergoes a chemical change. |
What is a Product? | A substance that is the result of a chemical change. |
What is Chemical Energy? | The energy stored within atoms and molecules that can be released when a substance reacts. |
What is a Exothermic Reaction? | A reaction that transfers energy from the reactants to the surroundings usually as heat. |
What is a Endothermic Reaction? | A reaction in which energy is transferred to the reactants usually as heat from the surroundings. |
What is a Synthesis Reaction? | A reaction of at least two substances that forms a new, more complex compound. |
What is a Decomposition Reaction? | A reaction in which one compound breaks into at least two products. |
What is Electrolysis? | The decomposition of a compound by an electric current. |
What is a Combustion Reaction? | A reaction in which a compound and oxygen burn. |
What is a Single-Displacement Reaction? | A reaction in which atoms of one element take the place of atoms of another element in a compound. |
What is a Double - Displacement Reaction? | A reaction in which a gas, a solid precipitate, or a molecular compound is formed from the apparent exchange of ions between two compounds. |
What is a Reduction Reaction? | A reaction that occurs when electrons are transferred from one reactant to another. |
What are Radicals? | The fragments of molecules that have at least one electron available from bonding. |
What is a Chemical Equation? | An equation that uses chemical formulas and symbols to show the reactants and products in a chemical reaction. |
What is a Mole Ratio? | The smallest relative number of moles of the substances involved in a reaction. |
What is a Catalyst? | A substance that changes the rate of chemical reactions without being consumed. |
What is an Enzyme? | A protein that speeds up a specific biochemical reaction. |
What is a Substrate? | The specific substance affected by an enzyme. |
What is a Equilibrium? | The state in which a chemical reaction and its reverse occur at the same time and at the same rate. |