4 Written Questions
4 Multiple Choice Questions
- the extremely small, positively charged, dense center of an atom that contains positively charged protons, neutral neutrons, and is surrounded by empty space through which one or more negatively charged electrons move.
- the weighted average mass of the isotopes of that element.
- the number of protons in an atom.
- a negatively charged, fast-moving particle with an extremely small mass that is found in all forms of matter and moves through the empty space surrounding an atom's nucleus.
4 True/False Questions
isotope → a subatomic particle in an atom's nucleus that has a positive charge of 1+.
proton → a subatomic particle in an atom's nucleus that has a positive charge of 1+.
atom → the smallest particle of an element that retains all the properties of that element; is electrically neutral, spherically shaped and composed of electrons, protons and neutrons.
atomic mass unit → 1/12 the mass of a carbon-12 atom.