Chemical Symbols & Formulas: A Memory Game for Beginners
Master Molecules and Chemical Formulas While Having Fun!
Let's learn the molecules and chemical formulas taught in middle school through this interactive game.
The game features a total of 48 items: 18 simple substances and 30 compounds. You can find the full list below.
The game challenges you to match the substance names with their corresponding chemical symbols and formulas.
Don't worry if you're a total beginner! A brief explanation appears every time you flip a card, helping you learn naturally as you play.
Try it out as a fun way to review before your next science quiz or exam!
Reference List
Simple Substances: Molecular (Gases)
- Hydrogen (H2): [Collection: Water displacement] The lightest element in the universe; makes a "pop" sound when ignited.
- Oxygen (O2): [Collection: Water displacement] Supports combustion; essential for making things burn intensely.
- Nitrogen (N2): [Collection: Water displacement] A gas that makes up about 78% of the Earth's atmosphere.
- Chlorine (Cl2): [Collection: Downward delivery] A yellow-green gas with a pungent smell; used for bleaching and disinfection.
Simple Substances: Non-molecular (Metals & Others)
- Helium (He): The second lightest element; non-flammable and used in balloons.
- Carbon (C): The primary component of pencil leads (graphite) and diamonds.
- Sulfur (S): A yellow powder responsible for the distinct smell of volcanoes and hot springs.
- Sodium (Na): A soft metal that reacts violently when placed in water.
- Magnesium (Mg): Burns with a brilliant white flash and turns into a white powder.
- Aluminum (Al): Lightweight and conductive; commonly used in soda cans and foil.
- Potassium (K): An essential metal for plant fertilizer and human health.
- Calcium (Ca): A vital metal for building strong bones and teeth.
- Iron (Fe): The most widely used metal; found in everything from steel cans to skyscrapers.
- Copper (Cu): A reddish metal that conducts electricity exceptionally well; used in coins.
- Zinc (Zn): Produces hydrogen gas when reacted with dilute hydrochloric acid.
- Silver (Ag): The metal with the highest electrical and thermal conductivity.
- Barium (Ba): Reacts with sulfuric acid to form a white precipitate.
- Mercury (Hg): The only metal that remains in a liquid state at room temperature.
Compounds: Gases
- Ammonia (NH3): [Collection: Upward delivery] Highly soluble in water and alkaline; the star of the "fountain experiment."
- Hydrogen Chloride (HCl): [Collection: Downward delivery] A pungent gas that becomes "Hydrochloric Acid" when dissolved in water.
- Carbon Dioxide (CO2): [Collection: Downward delivery / Water displacement] Turns limewater cloudy; its solid form is dry ice.
- Hydrogen Sulfide (H2S): [Collection: Downward delivery] A toxic gas with a characteristic smell of rotten eggs.
- Methane (CH4): [Collection: Water displacement] The main component of natural gas; produces CO2 and water when burned.
Compounds: Liquids and Solids
- Water (H2O): The essential liquid of life, formed when hydrogen burns in oxygen.
- Sodium Chloride (NaCl): Common table salt; found in abundance in seawater.
- Copper(II) Chloride (CuCl2): Turns water blue; decomposes into copper and chlorine via electrolysis.
- Copper(II) Oxide (CuO): A black substance formed when reddish copper is heated in air.
- Silver Oxide (Ag2O): A black substance that decomposes into silver and oxygen when heated.
- Magnesium Oxide (MgO): The white powder produced after magnesium burns.
- Hydrogen Peroxide (H2O2): The active ingredient in antiseptic; produces oxygen when manganese dioxide is added.
- Iron Sulfide (FeS): Formed by heating iron and sulfur; releases hydrogen sulfide when reacted with acid.
- Copper Sulfide (CuS): A black substance formed by the chemical combination of copper and sulfur.
- Acetic Acid (CH3COOH): The sour component of vinegar; a weak acid.
- Sodium Hydroxide (NaOH): A strong alkali that dissolves proteins; it absorbs moisture from the air and dissolves (deliquescence).
- Potassium Hydroxide (KOH): A strong alkaline substance similar to sodium hydroxide.
- Calcium Hydroxide (Ca(OH)2): A white powder that creates "limewater" when dissolved in water.
- Barium Hydroxide (Ba(OH)2): Forms an insoluble white precipitate (Barium Sulfate) when mixed with sulfuric acid.
- Sulfuric Acid (H2SO4): A very strong, corrosive acid that can dissolve many metals.
- Copper(II) Sulfate (CuSO4): Creates a beautiful blue solution when dissolved in water.
- Barium Sulfate (BaSO4): Used as a contrast medium for X-rays (Barium meal); it is insoluble in water.
- Sodium Hydrogen Carbonate (NaHCO3): Baking soda; a staple for thermal decomposition experiments.
- Sodium Carbonate (Na2CO3): The white powder remaining after heating baking soda; it is strongly alkaline.
- Nitric Acid (HNO3): A strong acid capable of dissolving metals like copper and silver.
- Ammonium Chloride (NH4Cl): Releases ammonia gas when mixed with calcium hydroxide and heated.
- Zinc Sulfate (ZnSO4): A component used in experiments like the Daniell cell.
- Magnesium Sulfate (MgSO4): Often used in bath salts (Epsom salts).
- Potassium Nitrate (KNO3): A classic substance for solubility curve problems due to its rapid solubility change with temperature.
- Silver Nitrate (AgNO3): Forms a white precipitate when added to saltwater (chloride ions).
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