RATES OF CHEMICAL REACTIONS

How fast a reaction finishes

Rate

These are particles bumping into eachother

Collision

How hot or cold something is

Temperature

How much outside a solid has

Surface Area

How Crowded the particles are

Concentration

Something that speeds a reaction up without being used up

Catalyst

an experiment where u changed exactly one thing and kept everything else the same

Fair Test

are on the left

Reactants

are on the right

products

are never created and never destroyed

atoms

they only get rebuilt into different substances

atoms

the big number in front

coefficient

it multiplies everything in the formula after it

the big number in front

the small number below

it is called a subscript

it multiplies only the letter it sits under

the small number below

happen when particles bump into each other

reactions

more bumps or harder bumps means

a faster reaction

just means how FAST a reaction finishes

Rate

suka meets baking soda, this reaction is an eample of whcih rate

a few seconds

bread dough rising, this is an example of

minutes

cut saging, turning brown

hours

tuyo drying in the sun,

days

yero rusting into holes

years

less time means a

higher rate

how much reaction happens in a certian amount of time

rate

this means a slower reaction

a bigger time

faster particles cover more ground, so they run into eachother often that means changing what variable

the temperature

when you break it into smaller pieces and create far more outside, what variable do you change

Surface Area

the more crowded they are, the harder it is to move without hitting something, this means changing the

concentration

Some substances let a reaction happen by a shortcut and come out unchanged at the end.

Catalyst

colder =

slower

warmer =

faster

heat the particles up and they

move faster

cool them down and they

slow

the same amount of solid reacts faster when it is

broken into smaller pieces

this means crowded

concentration

the more crowded the particles the more often

they run into eachother

gives the reaction an easier path

catalyst

speeds the reaction up and is not used up itself

catalyst

what makes a test fair

change one thing

measure one thing

keep the rest the same

when its a cold suka it is

a little fizzing

when it is just room temp suka it is

a lot of fizzing

are for keeping numbers safe and exact

tables

turns the comaprison into something you see in one glance

graph

the thing you deliberately kept the same to compare against

contorl

In a controlled experiment, what is the term for the single factor that the experimenter deliberately changes?

Independent Variable

In a reaction rate experiment measuring time to complete fizzing, what is time measured as

Dependent Variable

is the amount of solute particles packed into a specific volume of solution

Concentration