Unit 16 nuclear chemistry

Nuclear reaction A reaction in which the nucleus of an atom is changed affecting the identity of that element What are some differences between chemical reactions and nuclear reactions? Elements may be changed in a nuclear reaction but are only rearranged in a chemical reaction What is the strong nuclear Read more…

Unit 3-part 2: Nuclear Chemistry

electromagnetic radiation (EMR) high energy particles with no mass given off by different objects photons “packet” of energy that moves through space, all types of EMR fall into one of these “packets” electromagnetic spectrum (EMS) entire range of possible energies given off my EMR Non-ionizing radiation low energy radiation, not Read more…

Nuclear Chemistry

Niel’s Bohr • In 1913 Niels’ Bohr, a Danish physicist proposed a new model for the hydrogen atom •He proposed that the electron has certain orbits that it has to stay in that circle the nucleus •The orbits can also be called ATOMIC ENERGY LEVELS Niels Bohr •An electron can Read more…

Nuclear Chemistry: Unit 5

Most chemical reactions involve The exchange or shafing of electrons which does not affect the nucleus How is nuclear chemistry different than other chemical reactions? Bc it involves changes in the nucleus Transmutation When the nucleus of one element is changed into the nucleus of a different element Which means Read more…

Nuclear Chemistry (Notes)

Discovery of Radiation Henri Becquerel 1896 – wrapped photographic film in black paper, put uranium on top and left it in the sun – the photograph was “exposed” so he figured the uranium had absorbed and emitted sunlight – did same experiment on cloudy day…film was still exposed – concluded Read more…

Chemistry Exam IV-Unit 10 Nuclear Chemistry

2 Types of Nuclear Reactions 1. Radioactive Decay 2. Nuclear Bombardment (Particle Accelerator) Proton Particle ∆Z=-1, ∆A=-1 Neutron Particle ∆Z=0, ∆A=-1 Beta Particle ∆Z=+1, ∆A=0 Positron (+ electron) ∆Z=-1, ∆A=0 Alpha Particle ∆Z=-2, ∆A=-4 Gamma Particle ∆Z=0, ∆A=0 Deuteron ∆Z=-1, ∆A=-2 Tritium ∆Z=-1, ∆A=-3 Predict Stability-Magic Numbers Stable Predict Stability-Even Read more…

Chem Ch.21 (Nuclear Chemistry)

Nuclear Reactions Transformations of atomic nuclei that can involve enormous changes in energy. Roughly 13% of electricity worldwide comes from nuclear power plants. i.e. Energy of stars and created by nuclear power plants. (908) Flashcard… Table 21.1 (912), Table 21.3 (913), figure 21.15 (933), Table 21.9 (941) Nucleons Subatomic particles Read more…

Nuclear Chemistry Review

Radioactivity Process by which nuclei of unstable isotopes emit radiation Subatomic Particles in the Nucleus In the nucleus of an atom, there are protons (p+) and neutrons (n0) Radioisotope An unstable isotope that is subject to radioactive decay Radioactive Decay The breaking down of an unstable atomic nucleus to produce Read more…

Ch2

arithmetic 算術 average 一般的 beam 光線 calculate 計算 calculation (n) 估算;精算 calculator (n.10)計算機 CD/compact disk n.雷射唱片、光碟 Chemistry 化學 clone 複製的生物 code 密碼 compute (v)計算;估算 digital adj. 數位的;數字的 download v. 下載 DVD 數位影音光碟 electric (adj.) 電的,用電的 electricity n.電 electronic (adj.10)電子的 email 電子郵件 engine n. 引擎 escalator 手扶梯 experiment 實驗 fax 傳真 Read more…

Unit 02 : Nuclear Chemistry

1) How does a nuclear reaction differ from a chemical reaction? • Nuclear reactions change an element into a completely different element AND produce massive amounts of energy. 2) In terms of atomic structure, what makes a nucleus unstable? • The ratio of protons to neutrons is wrong; it is Read more…

PreAP Nuclear Chemistry Review

Chemical Reactions Involves valence electrons, Elements rearranged to form new compounds, Law of conservation of mass obeyed, Little energy released. Nuclear Reactions *Changes occur in the nucleus; involves protons, neutrons, and electrons. *Transmutation occurs (one element turns into another) *Law is not always obeyed. Mass is changed into energy. *Lots Read more…