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Chemical Equilib
Thermochemistry, Equilbrium, Reaction rates
Term | Definition |
---|---|
Concentration of products and reactants stops changing | equilibrium |
Adding heat makes reactions go: | Faster |
Decreasing concentration of reactants makes reactions go: | Slower |
Reaction in which products can react to re-form reactants | Reversible |
Removing products in a reversible reaction | Shifts the equilibrium to the right |
Adding products in a reversible reaction | Shifts the equilibrium to the left |
Which two factors are important to have a successful collision in a chemical reaction? | Sufficient energy and the correct orientation of the particles |
What is a catalyst? | Lowers the activation energy |
What is a calorie? | Amount of energy that increases temperature of 1 ml of water by 1 degree C |
What is a joule? | SI unit of energy; 1 cal = 4.182 joules |
In an exothermic process, energy is a: | product |
In an endothermic reaction, energy is a: | reactant |
A reaction that will give off heat to the surroundings | Exothermic |
A reaction that absorbs or take in heat from the surroundings | Endothermic |
How do you increase the surface area of a solid? | Cut it up or grind it into tiny pieces |
What are biological catalysts called? | Enzymes |
What is the energy that gets a reaction started called? | Activation energy |
What is a Calorie? | 1000 calories or 1 kcal |
What do we measure the average kinetic energy of particles in a substance as? | Temperature |