QQuestionChemistry
QuestionChemistry
Match the following terms and definitions:
The smallest unit of an element
atom
The path surrounding the nucleus of an atom in which electrons are normally located
shell
The number of protons in the nucleus of the atom
atomic number
A pure substance where atoms of two or more elements are chemically bonded to one another
compound
The positively charged center of an atom
nucleus
Exists in orbit around the nucleus of an atom and carries a negative charge
electron
The smallest unit of a pure substance that consists of two or more atoms held together by a chemical bond
molecule
The mass of an element
atomic mass
A subatomic particle that carries no charge
neutron
Containing two atoms
diatomic
A subatomic particle with a positive charge
proton
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Answer
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Step 1: Match the term "atom" to its definition: The smallest unit of an element.
Atoms are the fundamental building blocks of matter, and they cannot be broken down into smaller parts using chemical reactions. Each atom of an element has the same number of protons in its nucleus, which determines the element's identity.
Step 2: Match the term "shell" to its definition: The path surrounding the nucleus of an atom in which electrons are normally located.
Electrons in an atom are arranged in distinct energy levels or shells around the nucleus. These shells, also known as electron shells, are responsible for the organization of electrons in an atom. The maximum number of electrons that can occupy a shell is given by the formula 2n^2, where n is the principal quantum number of the shell.
Final Answer
Atom: The smallest unit of an element. Shell: The path surrounding the nucleus of an atom in which electrons are normally located. Atomic number: The number of protons in the nucleus of the atom. Compound: A pure substance where atoms of two or more elements are chemically bonded to one another. Nucleus: The positively charged center of an atom. Electron: Exists in orbit around the nucleus of an atom and carries a negative charge. Molecule: The smallest unit of a pure substance that consists of two or more atoms held together by a chemical bond. Atomic mass: The mass of an element. Neutron: A subatomic particle that carries no charge. Diatomic: Containing two atoms.
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