Rates of Reaction

Midterms

Rates of reaction

how quickly reactants are converted into products.

What is speed of a reaction called

rate of the reaction

COLLISION THEORY

What does every reaction involve

Re-arrangement of atoms or ions and the formation of new bonds

Collision theory

is the idea that this re-arrangement requires collisions between the
reactant particles. It's only when the particles are in contact that new bonds can form
to make the products.

A successful collision requires

The right orientation, and enough energy, or speed, to break bonds

What factors affect rate of reaction

temperature, concentration, surface area, catalyst

Describe speed of rates reaction throughout its entirety

They start out at a certain speed then get slower and slower until they stop

How does temperature affect rate of reaction

the higher the temperature the faster the rate of reaction

How does concentration affect rate of reaction

the higher the concentration the faster the rate of reaction

What’s a catalyst

a substance in a rate of reaction that ise’t used up in that reaction

Cataysts never do ___

produce more product they just do so quicker

many catalysts are ___

transition metals/ their compoud

How does surface area affect rate of reaction

increase surface area = increase rate of reaction

Reactions only take place

on the surface of a solid

Composition reaction

When two or more reactants join together to form a single product

decomposition reactions

when a single reactant breaks down into two or more products

single displacement reactions

a reaction in which one element is substituted for another in a compound

Double displacement reaction

the exchange of ions between two reactants to form two new compounds

Precipitation reactions

a reaction between two solutions that form a solid

Precipitate

A solid that settles out of solutions

Law of Conservation of Mass

in a closed system, the total mass of a chemical reaction remains constant

Product

the process of forming new substances or products from reactants during a chemical reaction.

Reactant

The substance that takes part in and undergoes change during a reaction.

Compound

a substance composed of two or more different chemical elements that are chemically bonded together

Element

a pure substance composed of only one type of atom

Chemical Reaction

a process where one or more substances, called reactants, are converted into one or more different substances, called products