5 Questions
What is the smallest unit of matter that retains the properties of an element?
Atom
Which of the following particles has a positive charge?
Proton
What is the region outside the nucleus where electrons orbit?
Electron cloud
Which of the following is NOT a subatomic particle?
Molecule
What is the term for the attraction between electrons and the nucleus?
Electrostatic force
Study Notes
Atomic Structure
- The smallest unit of matter that retains the properties of an element is an atom.
- The proton is the particle with a positive charge.
Electron Orbit
- The region outside the nucleus where electrons orbit is called an electron cloud or electron shell.
Subatomic Particles
- The following are subatomic particles: protons, neutrons, electrons.
Atomic Interactions
- The attraction between electrons and the nucleus is termed electrostatic attraction.
Test your knowledge of atomic structure, including the smallest unit of matter, subatomic particles, and electron orbitals.
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