Science Source General Science

A book is supported by a plastic bag filled with carbon dioxide which sublimated from dry ice that had been placed in a collapsed bag. the pressure re...

Soap bubbles diffract light.

Potassium reacting with water. Potassium (symbol K) is a highly reactive metallic element of group one of the periodic table. It reacts with water to...

Bismuth crystal. Bismuth is a heavy, brittle, crystalline metal. This rectangular crystal structure only forms when bismuth is slowly cooled in the la...

Aluminum foil is added to a solution of copper (II) nitrate, Cu(NO3)2, and sodium chloride (NaCl), producing an exothermic reaction (made evident by t...

Aluminum foil is added to a solution of copper (II) nitrate, Cu(NO3)2, and sodium chloride (NaCl), producing an exothermic reaction (made evident by t...

Aluminum foil is added to a solution of copper (II) nitrate, Cu(NO3)2, and sodium chloride (NaCl), producing an exothermic reaction (made evident by t...

Potassium and chromate and lead.

Sulfur burning in pure oxygen.

Physical change: a rose is dipped in liquid nitrogen.

A screw is an example of a helix, a special kind of space curve. The DNA molecule is a double helix, or two intertwined helices.

Cooling nitrogen dioxide to give Nitrogen tetroxide.

Cooling nitrogen dioxide to give Nitrogen tetroxide.

Carbon dioxide being released when opening a bottle.

Pink and blue solutions of cobalt chloride; the temperature changes the solution's color.

The color of a reaction changes with time. 1 in a series of 4.

The color of a reaction changes with time. 2 in a series of 4.

The color of a reaction changes with time. 3 in a series of 4.

The color of a reaction changes with time. 4 in a series of 4.

Baking powder reacting with baking soda.

Iron.

Illustration showing the electrostatic potential (blue isobars) in the equatorial plane of a helium atom.

Sarin nerve gas. Computer artwork of a molecule of the nerve gas Sarin (methylphosphoneflouridic, (1- methyl ester), chemical formula (C4. H10. O2.P.F...

Interference patterns are visible in this oil stain on a Holland street.

Cathode Ray Tube.

Buffer solution for pH 3.00 with a strip of litmus paper.

Radiometer. The radiometer was invented by British physicist Sir William Crookes (1832-1919). The instrument was used to measure solar radiation. It c...

Radiometer. The radiometer was invented by British physicist Sir William Crookes (1832-1919). The instrument was used to measure solar radiation. It c...

Radiometer. The radiometer was invented by British physicist Sir William Crookes (1832-1919). The instrument was used to measure solar radiation. It c...

Radiometer. The radiometer was invented by British physicist Sir William Crookes (1832-1919). The instrument was used to measure solar radiation. It c...

Boiling liquid (copper sulfate).

Razor blade floating on water, demonstrating surface tension.

Hot plastic sulfur poured into water. Plastic, also known as amorphous, sulfur is produced through the rapid cooling of molten sulfur.

Mercury sulfide (HgS) and liquid mercury (Hg).

Consumer products made of aluminum.

Steel wool burning over a bunsen burner. Steel wool is made from tightly-bundled fine steel wire. Oxygen is the reactive component of the air, but its...

Aluminum reacting with Sodium Hydroxide, (NaOH).

Scientific equipment used by Louis Pasteur.

Sodium reacting with water. Flames during a chemical reaction caused by water being dripped onto sodium from a burette (at upper centre). Water molecu...

A mercury thermometer used in home heating.

A mercury thermometer used in home heating.

Liquid Nitrogen.

A comb picks up small pieces of paper.

Compass and needle floating on water pointing north. The magnetic compass is an instrument used to determine geographic direction. A thin of magnetic...

Mercury (Hg) gas light.

Depiction of osmosis. Osmosis describes the diffusion of a solvent through a semi-permeable membrane. The vial on the left contains a carrot in a solu...

Metals and metal products: aluminum (Al), steel, copper (Cu), lead (Pb), gold (Au), and silver (Ag).

Triple beam balance, used to weigh.

Triple beam balance, used to weigh.

Thermal expansion of gas. Experiment showing how gas expands with increasing temperature, a phenomenon known as Charles' Law. The experiment consists...