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OpenStem
@openstem · Joined Jul 2026
7420 public items8 groups
CollectionChemistry
5 CONTENT ITEMS
Chemistry · L1 · Why Salt Melts Icy Roads
Chemistry · L1 · Why Salt Melts Icy RoadsCollectionChemistry
5 CONTENT ITEMS
Chemistry · L1 · Secret Messages with Invisible Ink
Chemistry · L1 · Secret Messages with Invisible InkCollectionChemistry
5 CONTENT ITEMS
Chemistry · L1 · Why Food Colouring Spreads Through Water
Chemistry · L1 · Why Food Colouring Spreads Through WaterCollectionChemistry
5 CONTENT ITEMS
Chemistry · L1 · Why Helium Balloons Float Up
Chemistry · L1 · Why Helium Balloons Float UpCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Sour or Soapy? Acids and Bases in the Kitchen
Chemistry · L1 · Sour or Soapy? Acids and Bases in the KitchenCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Why a Candle Burns
Chemistry · L1 · Why a Candle BurnsCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Dissolving vs. Melting
Chemistry · L1 · Dissolving vs. MeltingCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Evaporation and Condensation
Chemistry · L1 · Evaporation and CondensationCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Why Salt Melts Sidewalk Ice Faster
Chemistry · L1 · Why Salt Melts Sidewalk Ice FasterCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Milk and Vinegar Curdling
Chemistry · L1 · Milk and Vinegar CurdlingCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Mixtures vs. Solutions
Chemistry · L1 · Mixtures vs. SolutionsCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Oil and Water Don't Mix
Chemistry · L1 · Oil and Water Don't MixCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Hidden Colors in a Black Marker
Chemistry · L1 · Hidden Colors in a Black MarkerCollectionChemistry
4 CONTENT ITEMS
Chemistry · L1 · Solid, Liquid, or Gas?
Chemistry · L1 · Solid, Liquid, or Gas?CollectionChemistry
11 CONTENT ITEMS
Chemistry · L2 · Atoms, Mixtures & Reactions
Chemistry · L2 · Atoms, Mixtures & ReactionsCollectionChemistry
6 CONTENT ITEMS
Chemistry · L2 · Periodic Table Basics
Chemistry · L2 · Periodic Table BasicsCollectionChemistry
7 CONTENT ITEMS
Chemistry · L2 · Acids, Bases & the pH Scale
Chemistry · L2 · Acids, Bases & the pH ScaleCollectionChemistry
6 CONTENT ITEMS
Chemistry · L2 · Chemical Reactions & Word Equations
Chemistry · L2 · Chemical Reactions & Word EquationsCollectionChemistry
6 CONTENT ITEMS
Chemistry · L2 · Separating Mixtures
Chemistry · L2 · Separating MixturesCollectionChemistry
5 CONTENT ITEMS
Chemistry · L2 · Metals and Reactivity
Chemistry · L2 · Metals and ReactivityCollectionChemistry
9 CONTENT ITEMS
Chemistry · L2 · Elements, Compounds & Chemical Formulae
Chemistry · L2 · Elements, Compounds & Chemical FormulaeCollectionChemistry
7 CONTENT ITEMS
Chemistry · L2 · Solubility and Solutions
Chemistry · L2 · Solubility and SolutionsCollectionChemistry
6 CONTENT ITEMS
Chemistry · L2 · Combustion and Fuels
Chemistry · L2 · Combustion and FuelsCollectionChemistry
6 CONTENT ITEMS
Chemistry · L2 · Crystals and Crystallization
Chemistry · L2 · Crystals and CrystallizationCollectionChemistry
6 CONTENT ITEMS
Chemistry · L2 · Gases in the Air
Chemistry · L2 · Gases in the AirCollectionChemistry
7 CONTENT ITEMS
Chemistry · L2 · Polymers and Plastics
Chemistry · L2 · Polymers and PlasticsCollectionChemistry
6 CONTENT ITEMS
Chemistry · L2 · Chemical Safety and Hazard Symbols
Chemistry · L2 · Chemical Safety and Hazard SymbolsCollectionChemistry
6 CONTENT ITEMS