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In what way does the need for iodine or iron in your diet differ from your need for calcium or phosphorus?
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2. Chemistry
Atoms- Smallest Unit of Matter
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the smallest unit of matter?
A
Molecule
B
Electron
C
Cell
D
Atom
Verified step by step guidance1
Begin by understanding the concept of matter. Matter is anything that has mass and takes up space. It is composed of atoms, molecules, and other particles.
Identify the options given: Molecule, Electron, Cell, and Atom. Each represents a different level of organization in matter.
Define each term: A molecule is a group of atoms bonded together, an electron is a subatomic particle with a negative charge, a cell is the basic unit of life, and an atom is the smallest unit of matter that retains the properties of an element.
Recognize that atoms are the building blocks of matter. They consist of a nucleus containing protons and neutrons, surrounded by electrons.
Conclude that the smallest unit of matter is the atom, as it is the fundamental component from which molecules and cells are formed.
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