Credit goes to MakoSipper on Steam who created an alphabetical guide. I've played through on a new game and re-ordered everything so you can just go down the list and create elements, not jump around looking for what you may have missed on your first run.
Starting fresh on Episode One: (You'll cross into Episode two halfway through but it doesn't matter)
Air + Earth = Dust
Air + Fire = Energy
Air + Water = Steam
Air + Energy = Storm
Dust + Fire = Ash
Energy + Fire = Plasma
Fire + Water = Alcohol
Alcohol + Water = Vodka
Alcohol + Fire = Energy
Earth + Fire = Lava
Earth + Water = Swamp
Energy + Swamp = Life
Lava + Water = Steam + Stone
Stone + Stone = Fire + Stone
Stone + Water = Sand
Fire + Stone = Metal
Metal + Water = Quicksilver
Air + Stone = Sand
Air + Lava = Stone
Sand + Swamp = Clay
Life + Water = Weeds
Life + Sand = Seeds
Life + Ash = Ghost
Life + Stone = Egg
Life + Swamp = Bacteria
Life + Clay = Golem
Golem + Life = Human
Clay + Fire = Bricks
Clay + Human = Ceramics
Earth + Egg = Dinosaur
Dinosaur + Dinosaur = Dinosaur + Egg
Dinosaur + Fire = Dragon
Dinosaur + Human = Blood + Dinosaur
Dragon + Human = Ash + Dragon
Egg + Sand = Turtle
Turtle + Turtle = Egg + Turtle
Egg + Swamp = Lizard
Lizard + Lizard = Egg + Lizard
Air + Egg = Bird
Bird + Bird = Bird + Egg
Bird + Fire = Phoenix
Fire + Phoenix = Ash + Phoenix
Bird + Storm = Thunderbird
Air + Dinosaur = Dragon
Air + Lizard = Bird
Earth + Lizard = Beast
Beast + Human = Domestic Animal
Beast + Life = Human
Beast + Water = Whale
Swamp + Weeds = Moss
Moss + Swamp = Fern
Bacteria + Swamp = Sulfur + Worm
Bacteria + Water = Plankton
Bacteria + Plankton = Fish
Fish + Plankton = Whale
Air + Worm = Butterfly
Beast + Fish = Dolphin
Earth + Plankton = Worm
Earth + Moss = Grass
Earth + Seeds = Tree
Earth + Weeds = Mushroom
Earth + Worm = Beetle
Beetle + Sand = Scorpion
Tree + Tree = Seeds
Tree + Life = Treant
Tree + Sand = Palm Tree
Swamp + Worm = Snake
Sand + Worm = Snake
Snake + Snake = Egg + Snake + Snake
Snake + Water = Fish
Snake + Worm = Lizard
Snake + Fire = Ash
Fire + Sand = Glass
Glass + Water = Ice
Ice + Air = Snow
Fire + Grass = Tobacco
Fire + Human = Corpse
Fire + Lizard = Ash
Fire + Moss = Ash
Fire + Treant = Ash + Ghost
Fire + Tree = Ash + Coal
Coal + Water = Oil
Fire + Oil = Energy
Grass + Grass = Seeds
Grass + Swamp = Reed
Energy + Seeds = Coffee
Energy + Metal = Electricity
Energy + Human = Wizard
Energy + Wizard = Demigod
Human + Human = Sex
Human + Stone = Hut
Human + Vodka = Alcoholic
Human + Alcohol = Alcoholic
Human + Metal = Tools
Tools + Scorpion = Poison
Tools + Snake = Poison
Tools + Mushroom = Poison
Tools + Tree = Wood
Tools + Wood = Wheel
Water + Wood = Boat
Boat + Wood = Ship
Tools + Reed = Paper
Paper + Tobacco = Cigarette
Wheel + Wood = Cart
Cart + Beast = Chariot
Fire + Paper = Ash
Fire + Tobacco = Ash
Fire + Wood = Ash + Coal
Fire + Worm = Ash
Metal + Steam = Boiler
Boiler + Coal = Steam Engine
Steam Engine + Cart = Locomotive
Steam Engine + Ship = Steam Ship
Earth + Tools = Field
Field + Grass = Wheat
Field + Seeds = Wheat
Wheat + Stone = Flour
Flour + Water = Dough
Dough + Fire = Bread
Bread + Alcohol = Beer
Wheat + Alcohol = Beer
Beer + Human = Alcoholic
Plankton + Stone = Shells
Shells + Stone = Limestone
Limestone + Clay = Cement
Cement + Water = Concrete
Concrete + Bricks = House
Domestic Animal + Human = Meat + Milk + Wool
Domestic Animal + Grass = Fertilizer + Milk
Episode 1 complete! Automatically obtain Void.
Domestic Animal + Cart = Chariot
Fertilizer + Limestone = Saltpetre
Saltpetre + Sulfur = Gunpowder
Wool + Tools = Fabric
Fabric + Human = Clothing
Fabric + Ship = Frigate
Human + Poison = Corpse
Corpse + Fire = Ash
Corpse + Life = Zombie
Corpse + Zombie = Ghoul
Corpse + Wizard = Human + Wizard
Cart + Oil = Car
Air + Car = Airplane
Alcoholic + Car = Alcoholic + Corpse + Corpse
Glass + House = Skyscraper
Metal + Tools = Weapon
Weapon + Gunpowder = Firearm
Weapon + Poison = Poisoned Weapon
Human + Poisoned Weapon = Assassin
Assassin + Human = Assassin + Corpse
Human + Weapon = Hunter
Hunter + Weapon = Warrior
Assassin + Warrior = Assassin + Blood + Corpse
Warrior + Wizard = Worm + Wizard
Beast + Warrior = Blood + Warrior
Beast + Hunter = Blood + Meat + Wool
Hunter + Bird = Blood + Feather + Meat
Hunter + Dinosaur = Blood + Dinosaur
Hunter + Dragon = Ash + Dragon
Warrior + Dinosaur = Blood + Warrior
Warrior + Dragon = Blood + Hero
Warrior + Human = Blood + Corpse + Warrior
Gunpowder + Weapon = Firearm
Blood + Human = Vampire
Vampire + Human = Vampire + Vampire
Vampire + Beast = Werewolf
Feather + Paper = Book
Book + Fire = Ash
Demigod + Quicksilver = Philosopher's Stone
Philosopher's Stone + Alcoholic = Human
Philosopher's Stone + Poison = Water
Philosopher's Stone + Egg = Dragon
Philosopher's Stone + Corpse = Human
Philosopher's Stone + Human = Demigod
Philosopher's Stone + Metal = Gold
Philosopher's Stone + Vampire = Human
Philosopher's Stone + Water = Beer
Philosopher's Stone + Werewolf = Human
Philosopher's Stone + Wood = Tree
Philosopher's Stone + Zombie = Corpse
Philosopher's Stone + Ghost = Energy
Philosopher's Stone + Grass = Flower
Flower + Flower = Seeds
Flower + Tree = Apple
Plasma + Void = Sun
Sun + Vampire = Ash
Sun + Grass = Flower
Sun + Flower = Sunflower
Electricity + Void = Radiowave
Radiowave + Fire = Laser
Radiowave + Radiowave = Radiation
Metal + Radiation = Plutonium
Plutonium + Weapon = Nuclear Bomb
Nuclear Bomb + Demigod = Demigod + Flower
Void + Airplane = Rocket
Rocket + Void = Satellite
Void + Glass = Lightbulb
Lightbulb + Radiowave = TV
TV + Book = Computer
Computer + Radiowave = Cellphone
Cellphone + Apple = Gold + Gold + Gold
Book + Laser = CD
Computer + Human = Cyborg
Computer + Computer = Internet
Moving on to Episode Three:
Water + Water = Sea
Sea + Sun = Salt
Sea + Fire = Salt
Vodka + Worm = Tequila
Vodka + Coffee = B52
Vodka + Fire = Molotov Cocktail
Vodka + Milk = White Russian
Alcoholic + Ship = Pirate
Pirate + Vodka = Rum
Pirate + Alcohol = Rum
Alcohol + Worm = Tequila
Alcohol + Grass = Absinthe
House + Alcohol = Tavern
House + Alcoholic = Tavern
House + Beer = Tavern
House + Vodka = Tavern
Hut + Alcohol = Tavern
Hut + Alcoholic = Tavern
Hut + Beer = Tavern
Hut + Vodka = Tavern
Apple + Dough = Pie
Pie + Sex = Censored
Sex + Sex = Censored
Sex + Vodka = Censored
Sex + Censored = Censored
Airplane + Snake = Censored
Paper + Weeds = Censored
Book + Sex = Censored
Censored + Censored = Censored + Censored
Apple + Cellphone = Religion
Commandments + Human = Religion
Religion + Human = Law + Sin
Book + Human = Knowledge
Bacteria + Knowledge = Medicine
Medicine + Beast = Rat
Beast + House = Cat + Dog
Human + Knowledge = Scientist
Gold + Paper = Money
Money + Money = Money + Money + Money
Money + Scientist = Knowledge
Money + Pirate = Hangover
Money + Sex = Sin
Money + Skyscraper = Bank
Money + House = Bank
Money + Bank = Debt
Debt + Firearm = Corpse
Money + Debt = Credit Card
Law + Tools = Mechanism
Mechanism + Money = Bank
Money + Alcoholic = Hangover
Money + Human = Work
Human + Reed = Music
Beer + Vodka = Hangover
Music + Alcohol = Rock-N-Roll
Music + Vodka = Rock-N-Roll
Music + Sex = Rock-N-Roll
Music + Human = Fun
Fun + Law = Games
Games + Human = Fun
Human + Sex = Fun
Human + Rocket = Astronaut
Life + Void = Alien
Alien + Astronaut = Alien + Alien
Alien + Rocket = UFO
Bacteria + Human = Virus
Computer + Virus = Hacker
Hacker + Internet = Virus
Virus + Knowledge = Medicine
Corpse + Electricity = Death Metal
Beetle + Work = Ant
Glass + Sand = Clock
Glass + Water = Ice
Ice + Mechanism = Freezer
Freezer + Water = Ice
Ice + Milk = Ice Cream
Fish + Knowledge = Octopus
Fish + Egg = Caviar
Field + Reed = Sugar
Sugar + Bread = Cookies
Cookies + Ice = Ice Cream
Fire + Meat = Steak
Bacteria + Milk = Cheese
Bacteria + Medicine = Antibiotics
Firearm + Vodka = Russian Roulette
Firearm + Warrior = Soldier
Soldier + Law = Policeman
Book + Mechanism = Typewriter
Human + Typewriter = Journalist
And Finally Episode Four:
Magic + Music = Bard
Magic + Paper = Scroll
Magic + Religion = Priest
Magic + Priest = Prayer
Magic + Void = Darkness + Light
Magic + Water = Potion
Magic + Weapon = Wand
Magic + Beast = Unicorn
Magic + Egg = Dragon
Magic + Knowledge = Spell
Magic + Human = Elf
Elf + Human = Half-Elf
Elf + Darkness = Drow
Drow + Elf = Blood
Drow + Metal = Adamantite
Elf + Metal = Mithril
Elf + Weapon = Bow
Weapon + Wizard = Wand
Darkness + Earth = Underground
Underground + Elf = Drow
Earth + Human = Dwarf
Dwarf + Weapon = Axe + Hammer
Dwarf + Darkness = Duergar
Duergar + Dwarf = Blood
Human + Stone = Dwarf
Human + Metal = Armor
Human + Music = Bard
Human + Swamp = Goblin + Orc
Human + Weapon = Crossbow + Sword
Human + Tree = Druid
Armor + House = Castle
House + Wizard = Tower
Beast + Weapon = Claws
Beast + Darkness = Demon
Demon + Human = Demon + Ghost
Demon + Wizard = Corpse + Demon
Demon + Warrior = Corpse + Demon
Warrior + Priest = Paladin
Demon + Paladin = Blood + Paladin
Priest + Prayer = Healing
Priest + Weapon = Mace
Priest + Zombie = Corpse
Priest + Ghoul = Corpse + Ghost + Priest
Ghoul + Paladin = Corpse + Ghost + Paladin
Wixzard + religion = Priest
Wizard + Zombie = Necromancer
Necromancer + Corpse = Ghoul + Zombie
Life + Void = Chaos + Order
Life + Mechanism = Modron
Life + Light = Angel
Chaos + Void = Astral
Astral + Metal = Silver
Silver + Vampire = Ash
Light + Vampire = Ash
Light + Darkness = Shadow
Darkness + Energy = Death
Death + Healing = Resurrection
Death + Astral = Illithid
Astral + Spell = Teleport
Blood + Weapon = Sword
Assassin + Law = Rogue
Spell + Air = Illusion
Spell + Book = Spellbook
Spell + Fire = Fireball
Spell + Ice = Cone of Cold
Again, Thanks to MakoSipper. All I did was move things into a format that allows you to follow along from scratch instead of doing a second playthrough.