← Chapter 13 Test
6 Written Questions
5 Multiple Choice Questions
- The tiny core at the center of an atom containing most of the atom's mass and all of it's positive charge.
- The theory that describes matter and energy at very small (atomic) sizes.
- A particle found in the nucleus with a mass similar to the proton but with mass similar to the proton but with zero electric charge.
- A bright colored line in a spectroscope.
- It is impossible to know variables exactly in the quantum world.
5 True/False Questions
Radioactive → A nucleus is radioactive if it spontaneously breaks up, emitting particles or energy in the process.
Spectrum → The characteristic colors of light given off or absorbed by an element.
Energy level → One of the discrete allowed energies for electrons in an atom.
Elementary charge → The smallest unit of electric charge that is possible in ordinary matter; represented by the lower case letter 'e'.
Proton → A particle found in the nucleus with a mass similar to the proton but with mass similar to the proton but with zero electric charge.