University:
High School
Course:
High School Chemistry
Academic year:

2023
Views:

298

Pages:

1
Author:

Rose G

atoms & elements definitions Atom- the basic unit of chemical element a Element- any material that is made up of only one type of atam. Atomic number- a count of the number of protons in the atomic nucleus • Atomic Mass- +ne mass of an evements atoms listed ini table the periodic as an average value based on the relative abundance of the elements isotopes • Atomic symbol- an abbreviation for an element or atom Proton- a positively charged subatomic particle of the atomic nucieus - Nuetron- an electrically nuetraι subatomic particle of the atomic nucieus Electron- an extremely small, negatively charged subatomic particie found outside the atomic nucieus. Nucleon- any subatomic particle. found in the atomic nucleus; another name for potron or nuetron Shen- a region of space around the atomic nucleus in which electrons may reside Questions 1- hydrogen 2- irregular thermal movement 3- No, atoms are of a smaller wavelength +han visible light 4-scanning probe microscope 5- the atomic nucieus