acids
What is an acid
Substances that disassociates water to produce an excess of hydrogen ions
What are bases
substances that disassociates water to produce an excess of hydroxide ions
Who created the pH scale
Soren Sorensen
What happened what a chemical reaction occurs
Bonds are broken in energies either the least or absorbed
If the activation energy isn't reached will the colliding atoms react
no
How do you determine a strong acid
If the pH is very low(0-4)
What is another word for base
Alkaline
what does pH stand for
Potential of hydrogen
What is the base unit of energy
Joules
In order for a chemical reaction to occur Addams need to what
collide and they need a minimum amount of energy as they collide to trigger the reaction
How do you determine a weak acid
An acid that usually has a pH close to 7(5-6)
How do you determine a strong base
what number is neutral on the pH scale
7
What is endothermic and what is Exothermic
Endothermic- heat is released
exothermic- heat is absorbed
Once the activation energy is reached what happens
the reactants form an activated complex and they start the reaction
What are common examples of acids
Car battery and Citrus fruits
how do you determine a weak base
It usually has a pH close to 7 (8-10)
What numbers on the pH scale are acidic and what numbers are basic
Acidic-0-6
basic- 8-14
What two friends of energy are involved in chemical reactions
Heat and light
What happens when the reaction occurs
Products form
What are other examples of acids
Sour flavors
many are poisonous
react with metals to produce gas
can conduct electric currents,
many are corrosive,
and naturally found in many consumables such as citrus food and soft drinks
What are some characteristics of bases
Bitter flavor
slippery feeling
some can conduct electric currents
used in soap and other cleaning products and many medicine
What tool can tell us how acidic and basic a substance is
litmus paper
define energy
Ability to do work or cause change
How do you know if a reaction is endothermic or exothermic
If you gained or released energy