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How big is a molecule?
The size of a molecule depends on the size of the atom. The smallest a molecule can be is two atoms.
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Molecules are combinations of two or more atoms of different elements. Like atoms, they move around, or vibrate, depending on the phase of the substance. Like elements, molecu…lar motion determines a substance's phase (solid, liquid, gas), usually in response to an increase or decrease in temperature. Molecules can form or be broken down by chemical reactions. Reactions that form larger molecules are synthesis reactions, and reactions that break down molecules are called decomposition reactions. Sometimes substances will exchange or swap atoms, in what is called a substitution reaction, which creates different molecules and may release some free elements.
Carbon Oxygen Hydrogen Nitrogen
DNA is a molecule. This means that it is made from several atoms that link together. Well, it turns out that DNA is actually a really big molecule. Most molecules in creation …are made of millions of atoms linked together! Hope this helps you :) Information found in: Exploring Creation with General Science, Apologia Educational Ministries.
a molecule is a gas,solid, or liquid
A molecule is a group of atoms joined together by covalent bonds. If it is a molecule of element , atoms of the same element combine in a definite number . for example…: a chlorine molecule Cl2, an oxygen molecule O2, etc. If it is a molecule of a compound , atoms of two or more atoms of different elements combine in a definite ratio. for example: H2O, water, or C6H12O6, glucose. It was formerly defined as the smallest particle of a substance that can exist independently, but in modern usage it is not applied to ionic compounds such as calcium oxide, which are giant assemblies of ions.
In Nature, molecules are two or more different element atoms that are joined together using chemical bonds (the forces that hold atoms together). A group of atoms bond…ed together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
The smallest particle of a compound that has all the chemical properties of that compound. Molecules are made up of two or more atoms, either of the same element or of two or …more different elements. Ionic compounds, such as common salt, are made up not of molecules, but of ions arranged in a crystalline structure. Unlike ions, molecules carry no electrical charge. Molecules differ in size and molecular weight as well as in structure. Compounds are comprised of species whose electronegativities differ by 3.5 or more. The individual components when dissociated are called ions. Molecules are comprised of species whose electronegativities are within the 3.5 range. They more or less share the electrons between them and contain covalent bonds. A molecule is a combination of 2 or more atoms linked with chemical bond and is neutral, however molecule can also represent polyatomic ions
About 3x10 -10 m
Oxygen isn't a molecule, it's an atom. O2 (two oxygen atoms) on the other hand is a molecule. Most oxygen in the atmosphere is in the form O2. O3 is known as ozone, that stuff… that protects us from harmful rays. O2 is not polar because it is two of the same atoms. O3 is polar because the three molecules line up in a slightly triangular formation.
Air molecules is a little vague, the air that we breath is a mixture of mainly nitrogen (72% or so) oxygen and carbon dioxide. A water molecule is H20, two hy…drogen polar covalently bonded to one Oxygen. Besides for the two bonds to H the oxygen also has 2 lone pairs of electrons. To spread the charge the molecule has a bent shape. Due to the difference in electronegativity between H and O and the shape of the molecule water is polar. This allows water to hydrogen bond which connect s the H from one molecule to the O of another molecule, holding water together as a liquid. When you boil water these intermolecular forces are overcome and each individual molecule separates from each other, creating water vapor ( which is water in the gas phase). However, each individual water molecule remains the same.
A starch molecules is technically any polymer of sugar. These polysaccharides may be composed of as few as three sugar molecules and can stretch into the thousands and mil…lions of sugar subunits in nature.
RNA molecules are composed of smaller molecules called RNA nucleotides. Each RNA nucleotide is in turn composed of smaller molecules, which are the sugar ribose, a phophate gr…oup, and one of four nitrogen bases: adenine (A), uracil (U), guanine (G), and cytosine(C). The nucleotides combine so that the sugar of one nucleotide is chemically bonded to the phosphate of another nucleotide, and the nitrogen bases are chemically combined to the sugar ribose. Please refer to the related link below.
Molecules did not exist at the time of the Big Bang and not even in the immediate time after. To make molecules one needs atoms but it took about 370.000 years after the Big B…ang for the temperature had dropped enough for atoms to be stable.