what are characteristics of hydrogen?
56360
At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H2. Since hydrogen readily forms covalent compounds with most nonmetallic elements, most of the hydrogen on Earth exists in molecular forms such as water ...
745411
Chemical Properties of Atoms. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. The configuration of these electrons follows from the principles of quantum mechanics.
752125
['Color : It is a pale yellow, white or colourless gas.', 'Fluorescence : It can sometimes be fluorescent.', 'Solubility : In liquid form it is freely soluble in liquid oxygen and ozone.', 'Odor : Pungent.', 'Density : A density of 1.695 grams per liter, it is 1.3 times as dense as air.']
1223064
['They are inert gases located on the right of the periodic table.', "They have a full-set of valence electrons, so they're stable.", 'They are colorless, odorless and tasteless.', 'They have low melting and low boiling points.', "They can be found in small amounts in the Earth's crust and the Earth's atmosphere."]
658030
For example, carbon-12 is an isotope of carbon with a mass number of 12. All three isotopes of hydrogen have identical chemical properties . This is because the number of electrons determines chemical properties, and all three isotopes have one electron in their atoms.
571110
['Chemical composition.', 'Atomic bonding.', 'Corrosion resistance.', 'Acidity or Alkalinity.']
884150
['Water has a high specific heat. ... ', 'Water in a pure state has a neutral pH. ... ', 'Water conducts heat more easily than any liquid except mercury. ... ', 'Water exists as a liquid over an important range of temperature from 0 - 100° Celsius. ... ', 'Liquid water is a universal solvent.']
1340378
H2 is molecular hydrogen, which is mostly gaseous and extremely flammable. It is a molecule consisting two hydrogen atoms. Whereas H is hydrogen, neutral and an atom.
1140753
Hydrogen, H, is a highly flammable gas (H2)and the most common component of the universe. It is the lightest element ever and is colorless, odorless, and tasteless. ... It's also the most abundant chemical element on the periodic table. Hydrogen(H) is a gas, and is the first element on the periodic. table.
1372803
In daily life, when we refer to Hydrogen, we actually refer to H2 or dihydrogen, The molecule made of two atoms of hydrogen (H2) usually in a gaseous form. The Atom of Hydrogen is the first element in the periodic table, with chemical symbol H and the first element created after the Big Bang.
555928
The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling.
17162
['Gases have neither definite shape nor definite volume. They expand to the size of their container.', 'Gases are fluid, and flow easily.', 'Gases have low density, unless compressed. ... ', 'Gases diffuse (mix and spread out) and effuse (travel through small holes).']
590477
It doesn't have to consist of a single element or type of molecule. Pure hydrogen is a pure substance. So is pure honey, even though it consists of many different types of molecules.
97731
['shiny.', 'silvery-white.', 'somewhat reactive metals at standard temperature and pressure.', 'readily lose their two outermost electrons to form cations with a 2+ charge.', 'low densities.', 'low melting points.', 'low boiling points.']
1041422
Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion, and density.
361913
Physical characteristics Because most gases are difficult to observe directly, they are described through the use of four physical properties or macroscopic characteristics: pressure, volume, number of particles (chemists group them by moles) and temperature.
585161
4. Characteristic Properties of Matter—The Key Ideas The physical properties of matter include color, odor, density, solubility, melting point, boiling point, and electrical conductivity. These are properties that can be observed without chemically changing the substance. 5.