What is the simple definition of a molecule?
A molecule is two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance.
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 and one atom of oxygen react with each other and form one molecule of water.
What’s a molecule in biology?
A molecule is the smallest unit of matter that has distinctive chemical and physical properties. A molecule owns a definite size and mass. Two or more atoms (same or different) held together by a chemical bond form a molecule wherein the ratio of two atoms is fixed in an element.
Why is it a molecule?
Whether something is a molecule or not depends on the type of bond that is formed when its atoms join together. In general, electrons can be shared between atoms (a molecular bond) or electrons can be completely removed from one atom and given to another (an ionic bond). Molecules have molecular bonds.
What is molecule and its types?
(1) 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 chemicals bonds. (2) There are two types off molecules : 1. Molecules of an element : Molecule of an element is made up.
What is a molecule definition for kids?
A molecule is two or more atoms joined (or “bonded”) tightly together. The number and kinds of atoms in a molecule, and the way they are arranged, determine what substance it makes. For example, a molecule made of two oxygen atoms joined to one carbon atom forms carbon dioxide, a colorless gas.
What is a molecule Grade 10 chemistry?
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 is molecule class 9 chapter 3?
Answer: The smallest particle of matter, which can take part in a chemical reaction is called atom. Question 5. Define molecule. Answer: The smallest particle of an element or compound which can exist independently is called molecule.
What is a molecule Class 9 very short answer?
A molecule is the smallest thing a substance can be divided into while remaining the same substance. It is made up of two or more atoms that are bound together by chemical bonding.
What is a molecule called?
What are 3 types of molecules?
Molecules are of three types: Molecule of an atom, Molecule of an element and Molecule of a compound.
What is molecules with example?
A group of atoms that combine together and form a single entity. Ex- H 2 O where 2 atom of H and 1 of oxygen forms a molecule of water.
Is a human a molecule?
The human body is composed of a huge variety of molecules, but all of these are combinations of a few dozens of building blocks: The chemical elements of the periodic table. Yet the abundance of each atom is far from being similar.
Is o3 a molecule?
Ozone is a molecule made up of three oxygen atoms, often referenced as O3. Ozone is formed when heat and sunlight cause chemical reactions between oxides of nitrogen (NOX ) and Volatile Organic Compounds (VOC), which are also known as Hydrocarbons.
What is a ion Class 9?
Ion :- It is an electrically charged atom or molecule formed by loss or gain of electrons. Ion formed by loss of electron is called cation. Example:- Magnesium ion ⟶Mg2+ Ion formed by gain of electron is called anion.
What is atomicity class 9?
The number of atoms present in a molecule of an element is called its atomicity.
What are molecules 3 examples?
- H2O (water)
- N2 (nitrogen)
- O3 (ozone)
- CaO (calcium oxide)
- C6H12O6 (glucose, a type of sugar)
- NaCl (table salt)