DLD #16- Fission, Fusion and Nuclear Decay

Read the page below. What is Radioactive Decay? Watch the video, then answer questions 1-4.If the video won't play, click here to watch it in YouTube. 1) Atoms have three basic parts: protons, neutrons and electrons2) Unstable nuclei have too many protons or too many neutrons3) Unstable atoms can become stable by giving off protons or neutrons4) Radioactive decay is when an atom gives off a protons or neutrons Watch both videos below and then answer questions 5-7.If the videos won't play, click here to watch in Youtube. Nuclear Fission Nuclear Fusion 5) Fusion occurs when two small nuclei collide and combine to form one larger nucleus.6) Fission is a nuclear reaction that occurs when a large nucleus collides with a small particle. The large nucleus splits into two or more smaller nuclei. 7) Each of the boxes below shows a nuclear reaction. Determine whether each is fission or fusion. fission fusion fission fusion fission fusion Radioactive Decay Particles Watch the video, then answer question 8.If the video won't play, click here to watch in Youtube. 8) The table below lists various properties of the three decay particles. Match each description to the type of particle it describes. Description Type of Decay Particle Made of 2 protons and 2 neutrons Alpha Stopped by a sheet of paper Alpha Highest in energy Gamma Has a positive charge Alpha Made of an electron Beta Represented by the symbol α Alpha Represented by the symbol β Beta Can penetrate paper but not aluminum Beta Dangerous to humans Beta and Gamma Has a negative charge Beta Most dangerous type of decay Gamma Can travel through paper and aluminum but not thick lead Gamma Stopped by human skin Alpha Can travel through human skin Beta and Gamma Made of a wave (pure energy) Gamma Lowest in energy Alpha Represented by the symbol γ Gamma The same as a helium atom without electrons Alpha