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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.
- What are molecules made up of?
- What are 3 parts of a molecule?
- What do atoms molecules contain?
- What is molecule in Chem?
- How molecules are formed?
- How many atoms contain a compound?
- What are the characteristics of molecules of a substance?
- What are atoms and molecules made of?
- Are molecules made of cells?
- Do molecules make up cells?
- How are molecules composed of atoms held together?
- What are ions in chemistry?
- Is a chemical a molecule?
- How are molecules made kids?
- How are molecules compounds different?
What are molecules made up of?
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 are 3 parts of a molecule?
The three elements that make up over 99 percent of organic molecules are carbon, hydrogen and oxygen. These three combine together to form almost all chemical structures needed for life, including carbohydrates, lipids and proteins.
What do atoms molecules contain?
When two or more atoms link up, they create a molecule . A molecule of water is made of two atoms of hydrogen (H) and one atom of oxygen (O). The molecular mass is the sum of the masses of all the atoms in the molecule. A collection of molecules is called a compound.
What is molecule in Chem?
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.
How molecules are formed?
When two or more atoms chemically bond together, they form a molecule. Sometimes the atoms are all from the same element. ... In a covalent bond, electrons are shared between atoms. The bonds between the two hydrogen atoms and the oxygen atom in a molecule of water are covalent bonds.
How many atoms contain a compound?
Compounds are made of two or more atoms of different elements, such as water (H2O) and methane (CH4). Atoms are not drawn to scale. Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom.
What are the characteristics of molecules of a substance?
The three main properties of a molecular substance include: low melting points, or a temperature that indicates when a solid substance changes to a liquid; and boiling points, or a temperature that indicates the point at which a liquid changes to a gas, or vapor; poor conductivity; and low solubility, which is a ...
What are atoms and molecules made of?
What are atoms made of? Atoms are the basic building blocks of ordinary matter. Atoms can join together to form molecules, which in turn form most of the objects around you. Atoms are composed of particles called protons, electrons and neutrons.
Are molecules made of cells?
Explanation: Molecules are made of atoms. Cells are made by a multitude of molecules. The famous DNA, for example, is a long molecule mainly made of carbon atoms.
Do molecules make up cells?
Atoms make up molecules; molecules make up cells; cells make up tissues; and two or more kinds of tissues working together make an organ. An organ is a part of the body that performs a specialized physiologic function.
How are molecules composed of atoms held together?
Molecules are held together by one of two types of bonds – covalent bonds or ionic bonds. A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. ... Ionic bonding, by contrast, is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions.
What are ions in chemistry?
ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions. ... Ions are atoms or groups of atoms that gain an electrical charge by losing or acquiring electrons.
Is a chemical a molecule?
A molecule may be homonuclear, that is, it consists of atoms of one chemical element, as with two atoms in the oxygen molecule (O2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (two hydrogen atoms and one oxygen atom; H2O).
How are molecules made kids?
A molecule is two or more atoms joined (or “bonded”) tightly together. ... For example, a molecule made of two oxygen atoms joined to one carbon atom forms carbon dioxide, a colorless gas. But a molecule made of two hydrogen atoms joined to one oxygen atom forms water, a liquid.
How are molecules compounds different?
Molecules are two or more atoms chemically joined together. Compounds are two or more different elements joined together chemically.
