Multiple Choice
Can a single atom be considered a molecule?
2. Atoms & Elements
The Atom
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What is the smallest unit of an element that still retains the properties of the element?
A
Molecule
B
Electron
C
Proton
D
Atom
Verified step by step guidance1
Begin by understanding the concept of an element in chemistry. An element is a substance that cannot be broken down into simpler substances by chemical means. Each element is defined by the number of protons in its atoms.
Consider the structure of an atom, which is the smallest unit of an element. An atom consists of a nucleus made up of protons and neutrons, surrounded by electrons. The number of protons in the nucleus defines the element.
Reflect on the properties of an element. These properties are determined by the arrangement and number of electrons, protons, and neutrons in the atom. Therefore, the atom retains all the chemical properties of the element.
Differentiate between atoms and molecules. A molecule is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. However, a molecule may consist of atoms from different elements.
Conclude that the atom is the smallest unit of an element that retains the properties of that element, as it is defined by its unique number of protons and the arrangement of electrons.
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