Science Source General Science

Iron filings around a bar magnet reveal its magnetic field.

Polarized light reveals the stresses in a thin plastic strip being twisted. Magnified 1/2x.

A simple demonstration of light refraction. Light travels at different speeds in different optical mediums, such as water and air. When light from an...

Ionic compounds: salt, copper (II) sulfate, cobalt (II) chloride, and fluorite crystal.

A hot rod put in water raises the temperature (2 of 2).

A hot rod put in water raises the temperature (1 of 2).

Limestone.

Acid-base titration setup.

Sodium reacts with chlorine to give sodium chloride.

An electroscope detects static electricity. The device depicts the presence of a charge on the apparatus itself or objects nearby. A charge is registe...

Hot stove burner with pot.

Oxidation reduction reaction - Zn in aqueous copper sulfate.

Calcium hydride reacting with water, setting free hydrogn gas.

Lead sheet and lead graunlars.

A thermite reaction, in which iron oxide (FeO) reacts with aluminum (Al) to produce molten iron.

Dry ice (carbon dioxide) subliming.

Selenium on a watch glass.

Blue flame.

Phosphorus.

Aluminum burning in bromite.

Oil and water mixing.

Iron filings burning over a bunson burner.

Sodium reacting with water.

Sodium reacting with water.

Sodium reacting with water.

White phosphorus reacting with chlorine.

Blue flame.

PH of pure water.

A bottle of nitric acid.

Sterno burning.

Preparing a solution of copper nitrate.

A balloon is inflated by boiling water (1 of 2).

A balloon is inflated by boiling water (2 of 2).

Precipitation of silver chloride, (silver nitrate & sodium chloride).

Exactly 8.30 mL of ethanol in a cylinder.

An eighteenth-century scale.

Pouring a glass of champagne.

A glass of champagne.

Sugar heated by a flame turns a caramel color.

Sodium reacting with water. The sodium metal (Na) is the small ball at center. The acid-base indicator phenolphthalein has been added to the water bat...

Decomposition of mercury oxide to give metallic mercury.

Hydrogen peroxide releases oxygen by decomposition when exposed to manganese dioxide.

Precipitation of barium sulfate (BaCl2 and Na2SO4).

Lightning created by a Van de Graaf generator; Museum of Science, Boston, Massachusetts.

View of a pile of carbon powder on a ruler. Carbon naturally occurs in three main forms: diamond, graphite and amorphous carbon. This is the graphite...

Phosphorus.

Buckyballs C-60 powder.

Buckyballs C-60 powder.

Red and yellow Phosphorus.

Sodium metal.