Table of Contents
What is atom and molecule with example?
Atoms can bond together into groups and form a molecule. If the molecule contains atoms of different types bonded together, we call it a compound. For example, two hydrogen atoms and one oxygen atom bonded together creates the compound water.
What makes an atom a molecule?
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.
What is atom molecule and compound?
Molecules are the simplest unit of a covalent compound, and molecules can be represented in many different ways. Atoms are the smallest units of matter that still retain the fundamental chemical properties of an element. A compound is a distinct group of atoms held together by chemical bonds.
What is called 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 is atom short answer?
An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons. A proton is positively charged.
What is atom and molecule class 9?
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. Question 6.
What is a molecule made 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 is the basic difference between atom and molecule?
Atom refers to the smallest constituent unit of a chemical element. Molecules refer to a group of two or more atoms that are held together due to chemical bonds.
Are atoms made of molecules?
What are atoms made of? 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.
What is called element?
An element is a substance that cannot be broken down into any other substance. There are about 100 elements, each with its own type of atom. Everything in the universe contains the atoms of at least one or more elements. The periodic table lists all the known elements, grouping together those with similar properties.
What is molecule of elements?
A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together. Note that the two nitrogen atoms which comprise a nitrogen molecule move as a unit. Compounds.
What is a molecule example?
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. Methane (CH4), a common greenhouse gas, has five atoms, one of carbon (C) and four of hydrogen (H, see Fig. 2.9).
What is atom in science definition?
atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element.
What are the 4 types of atoms?
Different Kinds of Atoms Description. Atoms are made of tiny particles called protons, neutrons and electrons. Stable. Most atoms are stable. Isotopes. Every atom is a chemical element, like hydrogen, iron or chlorine. Radioactive. Some atoms have too many neutrons in the nucleus, which makes them unstable. Ions. Antimatter.
What is a molecule for Class 6?
Solution : The smallest unit of matter which can exist independently is called a molecule. Example – Oxygen molecule O_2.
What is atom in science class 8?
An atom is defined as the structural and functional unit of a matter. The term “atom” comes from the Greek word which means indivisible, because atoms are the smallest things in the universe and could not be divided. atoms are made up of three subatomic particles like protons, neutrons and electrons.
What is an atom Class 9 short answer?
Answer: The definition of an atom is the smallest component of an element, characterized by a sharing of the chemical properties of the element and a nucleus with neutrons, protons and electrons.
What are atoms made of?
Atoms are made up of a nucleus, protons and electrons. Atoms are the basic units of matter and the defining structure of elements. The term “atom” comes from the Greek word for indivisible, because it was once thought that atoms were the smallest things in the universe and could not be divided.
How do you identify a molecule?
Steps Used to Find the Shape of the Molecule Draw the Lewis Structure. Count the number of electron groups and identify them as bond pairs of electron groups or lone pairs of electrons. Name the electron-group geometry. Looking at the positions of other atomic nuclei around the central determine the molecular geometry.
What is the largest molecule?
MEET PG5, the largest stable synthetic molecule ever made. With a diameter of 10 nanometres and a mass equal to 200 million hydrogen atoms, this tree-like “macromolecule” paves the way for sophisticated structures capable of storing drugs within their folds, or bonding to a wide variety of different substances.
What is the difference between a molecule and a particle?
is that particle is a very small piece of matter, a fragment; especially, the smallest possible part of something while molecule is (chemistry) the smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.
How many atoms are in a molecule?
Molecule: group of two or more atoms held together by chemical bonds. So, minimum 2 atoms are required to form a molecule.
