12 experiments in this category

Physics, Chemistry

Gravity Defying Lid

10 - 30 min

Supplies: Water; Cup; Plastic lid or piece of cardboard or cardstock.

Concepts: Balanced forces(Physics); Pressure(Physics); Cohesion of water(Chemistry).

Physics, Chemistry

Magic Screen

10 - 30 min

Supplies: Water; Jar with metal ring or cup and rubberband; Screen or mesh cloth; Lid o...

Concepts: Balanced forces(Physics); Pressure(Physics); Cohesion and surface tension of water(Chemistry).

Physics, Ecology

Hot and Cold Water Cups

10 min to 6 hours

Supplies: Water of different temperatures; Identical-sized clear cups; Food coloring; ...

Concepts: Density(Physics); Thermohaline circulation(Ecology); Lake turnover(Ecology).

Physics, Chemistry

Walking Water

1 - 4 hrs

Supplies: 5 cups, 4 paper towels, Water, Food Coloring

Concepts: Capillary Action (Chemistry), Siphons (Physics), Gravity

Physics

Straw Siphon

10 - 20 min

Supplies: Bendable drinking straws, Cups, Water

Concepts: Siphons (Physics), Momentum (Physics), Gravity

Physics

Fountain in a Bottle

30 - 90 min

Supplies: Plastic Bottle, Plastic Tubing, Drill or knife, Glue and Tape

Concepts: Siphons (Physics), Momentum (Physics), Air Pressure (Physcis), Gravity

Physics, Chemistry

Oil Cube vs. Ice Cube

30 - 60 min

Supplies: Water, Oil, Ice cube tray, Freezer

Concepts: Density (Physics); Changes of state (Chemistry)

Physics, Chemistry

Frost Wedging

2 - 4 days

Supplies: Containers, balloons, Plaster of Paris, Water, Freezer

Concepts: Changes of state (Chemistry), Force (Physics)

Physics, Chemistry

Instant Slushy

2 - 3 hours

Supplies: Bottled soda, Freezer, Ice

Concepts: Supercooling of liquids (Physics and Chemistry), Changes of state (Chemistry)

Physics, Chemistry

Ocean in a Bottle

10-30 min

Supplies: Water, Oil, Bottle with lid, Plastic beads, Toothpicks, Hot glue, Thin plasti...

Concepts: Density (Physics), Hydrophobic vs. Hydrophilic (Chemistry)

Physics, Chemistry

Lava Lamp

10-30 min

Supplies: Water, Oil, Bottle, Effervescent antacid tablets, Food coloring

Concepts: Density (Physics), Chemical Reactions (Chemistry), Hydrophobic vs. Hydrophilic (Chemistry)

Physics

Halocline Eggs

10 min

Supplies: salt, water, eggs, jars

Concepts: density