← 312 Chapter 4 Test
5 Written Questions
5 Matching Questions
- Beta Radiation
- Atomic Mass Unit
- Beta Particles
- Radioactive Decay
- a The smallest particle of an element that retains the properties of the element.
- b This type of radiation of made up of beta particles.
- c A high-speed electron with a 1- charge.
- d This number is roughly equal to the mass of a single proton or neutron.
- e Unstable nuclei lose energy by emitting radiation during this spontaneous process.
5 Multiple Choice Questions
- A particle with two protons and two neutrons with a 2+ charge and equivalent to a helium-4 nucleus.
- A theory proposed by John Dalton that marked the beginning of the development of modern atomic theory.
- The process undergone by substances that spontaneously emit radiation.
- This device was used by J.J. Thomson during the discovery of the electron.
- These reactions involve a change in an atom's nucleus.
5 True/False Questions
Atomic Mass → This number is roughly equal to the mass of a single proton or neutron.
Alpha Radiation → This type of radiation of made up of beta particles.
Proton → The smallest particle of an element that retains the properties of the element.
Nucleus → A subatomic particle that has a mass nearly equal to that of a proton, but it carries no electrical charge.
Radiation → The rays and particles emitted by radioactive material.