SCIENCE
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
neutron
|
|
|
atom
|
|
|
electron
|
|
|
quarks
|
Detailed explanation-1: -An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.
Detailed explanation-2: -An element is a substance that consists of atoms which have the same number of protons, that is, the same atomic number. They are chemically the simplest substances and hence cannot be broken down using chemical methods. For example, hydrogen and oxygen.
Detailed explanation-3: -Note that an element: consists of only one kind of atom, cannot be broken down into a simpler type of matter by either physical or chemical means, and. can exist as either atoms (e.g. argon) or molecules (e.g., nitrogen).
Detailed explanation-4: -The smallest part of a substance that cannot be broken down chemically. Each atom has a nucleus (center) made up of protons (positive particles) and neutrons (particles with no charge).