A molecule is
the smallest particle in a chemical element or compound that has the chemical properties of that element or compound
. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.
How would you describe such a molecule?
Molecules are made up of one or more atoms
. If they contain more than one atom, the atoms can be the same (an oxygen molecule has two oxygen atoms) or different (a water molecule has two hydrogen atoms and one oxygen atom). Biological molecules, such as proteins and DNA, can be made up of many thousands of atoms.
What is a description of a molecule?
molecule,
a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance
.
What characteristics describe molecules?
All molecules
have a definite mass and size that are dependent on the atoms from which the molecule is made
. The mass is equal to the sum of the masses of all the individual atoms in the molecular structure.
What is true of a molecule?
All molecules of a compound
have the same properties
. The chemical properties of any individual compound would not change. The molecule is one of the smallest particles in any element that has the chemical properties of that element. Molecules are made of atoms.
Can you see a molecule?
This, believe it or not, is a
microscope
. It can help us see very small particles like molecules by feeling the particle with the tip of its needle. These very powerful microscopes are called atomic force microscopes, because they can see things by feeling the forces between atoms. …
How small is a molecule?
A small molecule contains only a few atoms, so atoms and small molecules have a similar range of sizes. They are very small, typically
around 0.1 nm or 1 × 10
– 10
m across
. Individual atoms and molecules are too small to see even with the most powerful light microscope.
What are the 2 types of molecules?
- Diatomic Molecules — A diatomic atom is composed of only two atoms, of the same or different chemical elements. …
- Heteronuclear Diatomic Molecules — A heteronuclear diatomic molecule consists of two of atoms of the same element combined. …
- OXYGEN MOLECULE.
- CARBON MONOXIDE MOLECULE (CO)
How many molecules are in the world?
Earth is consist of about
48,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 molecules
.
How many different molecules are there?
According to the Chemical Abstracts Service, CAS REGISTRY (SM) contains
more than 90 million unique organic and inorganic chemical substances
, such as alloys, coordination compounds, minerals, mixtures, polymers and salts, and more than 65 million sequences—more than any other database of its kind.
What are three characteristics of a molecule?
- They are very small in size.
- They have space between them.
- They are in constant random motion. Was this answer helpful? Similar questions. Which of the following options contains only elements. Medium. What does the following symbol stand for?
What is molecule and examples?
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up
of atoms that are held together by chemical bonds
. … For example, O
2
is the oxygen molecule most commonly found in the earth’s atmosphere; it has two atoms of oxygen.
What is an atom vs molecule?
Atoms are single neutral particles
. Molecules are neutral particles made of two or more atoms bonded together.
Is element a molecule?
Elements can be made of one atom
, like He, or be elemental molecules, such as hydrogen (H
2
), oxygen (O
2
), chlorine (Cl
2
), ozone (O
3
), and sulfur (S
8
). Atoms are not drawn to scale. Some elements are monatomic, meaning they are made of a single (mon-) atom (-atomic) in their molecular form.
What made up an atom?
It is composed of protons, which have a positive charge,
and neutrons
, which have no charge. Protons, neutrons, and the electrons surrounding them are long-lived particles present in all ordinary, naturally occurring atoms. Other subatomic particles may be found in association with these three types of particles.
What is a molecule class 9?
A group of two or more than two atoms of the same or different elements that are chemically bonded together
is called a molecule. For example: Two atoms of hydrogen (H
2 )
and one atom of oxygen (O
2
) react with each other and form one molecule of water.
