What is the basic unit of matter?

What is the basic unit of matter?

• A. Quark
• B. Ion
• C. Atom
• D. Isotope

Answer: (C)

The basic unit of matter is the atom because it is the smallest unit that retains the properties of an element and can combine with other atoms to build all substances. An atom has a nucleus made of protons and neutrons, surrounded by electrons in orbit around the nucleus. The particular arrangement and number of these particles determine what element the atom represents and how it behaves chemically. Quarks are smaller components inside protons and neutrons, so they’re part of subatomic structure rather than the unit we describe when talking about the matter that makes up everything. An ion is an atom (or molecule) that has gained or lost electrons, giving it a electrical charge. An isotope is a variant of the same element with a different number of neutrons but the same chemical behavior.

The basic unit of matter is the atom because it is the smallest unit that retains the properties of an element and can combine with other atoms to build all substances. An atom has a nucleus made of protons and neutrons, surrounded by electrons in orbit around the nucleus. The particular arrangement and number of these particles determine what element the atom represents and how it behaves chemically.

Quarks are smaller components inside protons and neutrons, so they’re part of subatomic structure rather than the unit we describe when talking about the matter that makes up everything. An ion is an atom (or molecule) that has gained or lost electrons, giving it a electrical charge. An isotope is a variant of the same element with a different number of neutrons but the same chemical behavior.