Hydrogen is a colorless, odorless and bland gas, formed by diatomic molecules. It is
by far the most abundant element in the universe and makes up about 90% of the
universe by weight.
Helium is one of the gases that is known to be “noble gases”. Helium gas is an
uncreative, colorless, and odorless monatomic gas. Helium is often put in
pressurized tanks.
Lithium is the lightest metal. Lithium easily floats on water, which it get reacts with
it; it skitters around releasing hydrogen gas.
Beryllium usually would be melted down and turned into strong parts for missiles
and spacecraft. It is expensive and infected.
Carbon is scattered very extensively in nature. It is found in abundance in the sun,
stars, comets, and atmospheres of most planets.
Nitrogen makes up about 78% of the atmosphere by volume but the atmosphere of
Mars contains less than 3% nitrogen.
Oxygen is one fifth of the atmosphere. Oxygen is the third most abundant element
found in the sun, and it plays a part in the carbon-nitrogen cycle.
Fluorine is a pale yellow gas that reacts violently with practically everything,
including glass.
The neon tubes are filled with motionless gas. A high voltage transformer sends a
current to light it up.
Sodium chunks were cut with a knife and stored under oil. In air they turn white in
seconds; exposed to water they generate hydrogen gas and explode in flaming balls
of molten sodium.
Magnesium grows during the refining process. Usually they are melted down into
useful products such as lightweight race car components. Thin strips light easily and
burn brightly.
Aluminum is created by pouring molten aluminum into a tank of water.
Chlorine is mainly known for purifying swimming pools and toothpaste. Since
chlorine is combined with sodium, chlorine makes table salt. Therefore, it is
important to life.
Argon is unmoving and colorless until an electric current makes it to a rich sky-blue
glow. As one of the least expensive gases, dense argon is often used as a shield gas to
protect against corrosion.
Potassium is a metal and is the seventh most abundant element and makes up about
1.5 % by weight of the earth's crust. Potassium is an essential constituent for plant
growth and it is found in most soils.
Calcium as the element is a grey silvery metal. The metal is rather hard. Calcium is a
necessary component of leaves, bones, teeth, and shells. Calcium is the fifth most
abundant element in the earth's crust and makes up more than 3% of the crust.
Gallium is one of a few elements which can be liquid near room temperatures; this
makes possible its use in high-temperature thermometers.
Germanium is a grayish metallic look, and in its pure state is crystal clear and fragile,
preserves its gleam in air at room temperature.
Arsenic combined with gallium it forms a semiconductor used in creating highspeed incorporated circuits for supercomputers and cell phones.
Selenium occurs in pure form in nature. Selenium is exactly as it came out of the
ground. It is used for products such as printers, copiers for the light.
Bromine is the only nonmetallic liquid element. It is a heavy, volatile, mobile,
dangerous reddish-brown liquid.
Krypton is present in the air. The atmosphere of Mars contains a little of krypton. It
is distinguished by its brilliant green and orange spectral lines.
Rubidium can be liquid at low temperatures, but only on a hot day given that its
melting point is about 40°C. It is a soft, silvery-white metallic element. It is one of
the most electropositive.
Strontium does not occur as the free element. Strontium is softer than calcium and
decomposes water more vigorously.
Indium is a very soft, silvery-white metal with a brilliant gleam. When this pure
metal is bent, it gives out a high-pitched yell type of sound.
Tin is a silvery-white metal, is soft, somewhat spongy, and has a highly clear
structure. Due to the breaking of these crystals, a sound what the scientist’s call "tin
cry" is heard when a bar is bent.
Antimony is an extremely delicate metal of a flaky, crystal clear texture. It is bluish
white and has a metallic gleam.
Tellurium has a silvery-white appearance, and exhibits a metallic gleam when pure.
It is brittle and easily crushed.
Iodine is a bluish-black, glossy solid. It passes off vapor at ambient temperatures
into a pretty blue-violet gas with an annoying odor.
Xenon is a motionless gas present in the atmosphere to a small amount. Xenon is
present in the Martian atmosphere to the extent.
Cesium is distinguished by a variety containing two bright lines in the blue. It is
silvery gold, soft, and ductile. It is the most electropositive and most alkaline
element.
Barium is a metallic element, soft, and is silver when in pure state. The metal
oxidizes very easily and it reacts with water or alcohol.
When freshly exposed to air, thallium shows a metallic gleam, but soon increases a
bluish-grey shade, similar to lead in appearance.
Lead is a bluish-white shiny metal. It is very soft, really flexible, spongy, and a
moderately poor conductor of electricity.
Bismuth is a white, crystal clear, delicate metal with a pinkish hint. Bismuth is the
most diamagnetic of all metals, and the thermal conductivity is lower than any
metal, except mercury.
Polonium has more isotopes than any other element, all of which are radioactive.
Polonium dissolves readily in thin acids, but is only slightly soluble in alkalis.
Radon is the longest-lived isotope has a half-life of only 8.3 hours. There are about
20 isotopes known, all of which are radioactive.
Francium occurs as a result of a broken-down silver-white metallic element.
Francium is found in shiny minerals, and can be made artificially by bombarding.
Radium is pure metallic and brilliant white when freshly prepared, but blackens on
exposure to air, probably due to formation of the nitride.