>< chemistry advanced study !

is the transformation of one or more substances into new substances with new properties

chemical change

this happens when you take a substance and turn it into something completely new

chemical change

there are two types of changes

physical change

chemical change

these are the same molecules and their bonds remain unchanged

physical change

these are new molecules and their bonds are either broken or formed

chemical change

what are the evidences of chemical change

color change

gas production

precipitate formation

temperature change

this is basically an unexpected color shift of an object

color change

theres bubbles, fizzing, smoke, gas released

gas production

solid forms from two liquid situations

precipitate formation

this is basically hot, and it releases energy

exothermic

this gets cold, and absorbs energy

endothermic

this is the process by which a chemical change happens

chemical reaction

it is basically the how and why behind that change

chemical reaction

this is basically the event

chemical change

this is the actual process of the atoms rearranging themselves to make that happen

chemical reaction

the starting substances or basically the ingredients

reactants

the new substances formed or basically the result

product

a chemical reaction is often described by writing a

chemical equation

uses either words or symbols and formulas to describe the changes that occur

chemical euqtion

the golden rule of conservation of mass

the total atoms of each element must be equal on both sides of the reaction arrow

this is an integer that is placed in front of the symbol of an element to show the ratios of different substances

coefficient

these are the tiny nu,bers that tell you how many atoms of an element are in a single moleucle

subscript