5 Questions
What is the smallest unit of matter that still retains the properties of an element?
Atom
What is the central part of an atom that contains most of its mass?
Nucleus
What is the negatively charged particle that orbits the nucleus of an atom?
Electron
What is the term for the number of protons present in the nucleus of an atom?
Atomic number
What is the term for the total number of protons and neutrons present in the nucleus of an atom?
Mass number
Study Notes
Atomic Structure
- The smallest unit of matter that still retains the properties of an element is an atom.
Atomic Components
- The central part of an atom that contains most of its mass is the nucleus.
- Negatively charged particles that orbit the nucleus of an atom are electrons.
Atomic Identifiers
- The term for the number of protons present in the nucleus of an atom is the atomic number.
- The term for the total number of protons and neutrons present in the nucleus of an atom is the mass number.
This quiz covers the basic structure of an atom, including the nucleus, protons, neutrons, and electrons. Test your knowledge of the smallest unit of matter!
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