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…

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

Willhelm Roentgen (1845-1923) discovered X-rays, a high energy form of light (1895) Henri Becquerel (1852-1909) found that uranium ores emit radiation that can pass through objects (like x-rays) and affect photographic plates (1896) Marie Sklodowska Curie (1867-1934) Marie and Pierre worked with Becquerel to understand radioactivity. Shared a Nobel prize Read more…

Nuclear Chemistry

nucleon protons/neutrons in atomic nuclei/nuclide nuclide atom identified by what is in the nucleus (protons/neutrons) mass defect difference between the mass of an atom and the sum of the masses of its particles. nuclear binding energy energy released when a nucleus is formed from nucleons-causes mass defect. amount of energy Read more…

Nuclear Chemistry

protons and neutrons atomic nuclei are made of _____________ nucleons protons and neutrons are collectively called _______ nuclide in nuclear chemistry, an atom is referred to as a(n) _________ protons and neutrons the nuclide is identified as the number of ________________ in its nucleus mass defect the difference of the Read more…

thermo-nuclear chemistry

thermochemistry the study of the transfers of energy as heat that accompany chemical reactions and physical changes calorimeter a device used to measure the heat absorbed or released in a chemical or physical change temperature the average kinetic energy of the individual particles joule the SI unit of heat and Read more…