Science Source General Science

Phosphorus and bromine reacting.

1M (32.1g) of sulfur in a beaker.

Flasks containing bromine and iodine.

Gold.

Three pH indicators in a basic solution: phenolphthalein, methyl violet and methyl orange.

Three pH indicators in acid solution, from left to right: phenolphthalein, methyl violet and methyl orange.

Battery and lamp showing a single circuit.

A difference in air pressure keeps the paper lid on this upside-down glass of water. The paper is suctioned to the glass and supports the weight of th...

Hydrogen tank

Bottle of salad dressing where the oil and vinegar have separated. This is known as a multiphasic liquid.

Hydrogen tank with flammable warning label.

Battery and lamps showing a series circuit.

Battery and lamp with one wire cut.

Homemade electromagnet made from small battery, nail and wire.

A pattern of air flow demonstrating the Bernoulli principle. A wing-shaped object placed in a wind tunnel acts as an airfoil, where the upper surface...

A golf ball is reflected in a concave mirror.

A ruler is reflected in a concave mirror.

A ruler is reflected in a concave mirror.

Close-up of a plastic zipper.

A magnet attracts paper clips.

Dark and light corn syrup mixture sequence. Image of 1 of 2 in a series. See 3r7946 for the other in the series.

Dark and light corn syrup mixture sequence. Image 2 of 2 in the series. See 3r7946 for the other in the series.

Two glasses of orange juice, each containing one cup of liquid.

Water pressure gauges on a fire engine. Data is presented in pounds per square inch.

Soap bubbles.

The gears of a 21-speed bike.

The gears of a 21-speed bike.

Water boils in a pot.

Iron filings showing a magnet's field of force.

A voltaic cell made by inserting zinc and copper electrodes into a grapefruit. A potential of over 0.9 V is obtained. (The water and citric acid of th...

Water in a graduate cylinder is displaced by a copper fitting (2 of 2).

Water in a graduate cylinder is displaced by a copper fitting (1 of 2).

Dry ice forms carbon dioxide bubbles when dropped in water.

Zinc strip reacting with acid - HCl

Dissolving sodium hydroxide (NaOH) in water produces a strong exothermic reaction, heating the solution.

Hydrochloric acid (HCl) reacts with limestone, producing salt.

Motor oil being poured into water (2 of 2). It will not dissolve.

Elemental calcium and oxygen react to give off calcium oxide.

Motor oil being poured into water (1 of 2). It will not dissolve.

Silicon.

This aluminum soft drink can was filled with 1 tablespoon of water and heated over the bunsen burner until the water boiled. Then, as seen here, the c...

Aerial view of the Poverty Point archaeological site. The site was active between 1750 BCE and 1350 BCE. Image on color infrared film.

Abacus.

Abacus.

Antimony ingot. Antimony is used in a variety of alloys. It is also commonly used in flame-proofing, ceramics, enamels, and paints.

Antimony ingot. Antimony is used in a variety of alloys. It is also commonly used in flame-proofing, ceramics, enamels, and paints.

Lithium metal. Lithium corrodes quickly in air, so is typically stored in oil.

Thermographic image demonstrating the loss of heat from a home. The red and yellow areas show the greatest loss of heat.

Digital illustration of the atomic structure. The nucleus is made up of protons and neutrons, and the orbitals are made up of electrons.

Asbestos, Anthophyllite; 10x magnification; polarized light.