Nuclear physics

Atoms

Isotope

Atom

Chemical element

Protons, Neutrons, and Electrons Practice Worksheet Fill in the blanks in the following worksheet. Please keep in mind that the isotope represented by each space may NOT be the most common isotope or the one closest in atomic mass to the value on the periodic table. Atomic symbol Atomic number Protons Neutrons Electrons Atomic mass B 6 11 24 31 37 39 89 29 35 43 100 Pb 207 102 70 89 225 Mo 53 81 206 100 159 No 261 Yb 172 106 159 Finding Protons, Neutrons, and Electrons of Elements

Radioactivity and Nuclear Energy Notes

Subject:

Rating:

No votes yet

SocialTags:

Radioactive Decay Activation Energy (Ea): The threshold energy that must be overcome to produce a chemical reaction Electromagnetic Radiation: Radiant energy that exhibits wavelike behavior and travels through space at the speed of light in a vacuum Radioisotope: a radioactive isotope Many nuclei are radioactive Radioactive: Refers to a nucleus that spontaneously decomposes to form a different nucleus Over 85% of all known nuclides are radioactive Nuclear Equation: an equation representing radioactive decay Types of Radioactive (Nuclear) Decay (The spontaneous decomposition of a nucleus to form a different nucleus): Alpha Decay Alpha () particle shoots out from nucleus equivalent to helium-4 Beta Decay Beta () particle shoots out from nucleus equivalent to an electron Gamma Decay

Holt Earth Science Chapter 12, Section 12.3

Subject:

Environmental Science

Rating:

No votes yet

SocialTags:

Atom

Radionuclide

Dating With Radioactivity It is possible to measure numerical values for the age of Earth?s geologic activities - in billions and millions of years - by using radiometric dating. A. Reviewing Basic Atomic Structure An atom has a nucleus with protons (positive) and neutrons (proton+electron combined = neutral) orbited by electrons (negative charge). Atomic Number = number of protons in the nucleus; each element?s Atomic Number differs. Atoms of the same element have the same number of protons. 99.9% of an atom?s mass is in the nucleus - electrons have hardly any mass. By adding together the number of protons and neutrons, the atomic mass of an atom is obtained. The number of neutrons varies (called isotopes; have different atomic masses).

IB Physics SL test 2014 1-1

Subject:

Rating:

No votes yet

SocialTags:

2214-6510 14 pages M14/4/PHYSI/SPM/ENG/TZ1/XX Wednesday 7 May 2014 (morning) Physics standard level PaPer 1 INSTRUCTIONS TO CANDIDATES ? Do not open this examination paper until instructed to do so. ? Answer all the questions. ? For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided. ? A clean copy of the Physics Data Booklet is required for this paper. ? The maximum mark for this examination paper is [30 marks]. 45 minutes ? International Baccalaureate Organization 2014 22146510 2214-6510 ? 2 ? M14/4/PHYSI/SPM/ENG/TZ1/XX 1. The radius of a sphere is measured with an uncertainty of 2 %. What is the uncertainty in the volume of the sphere? A. 2 % B. 4 % C. 6 % D. 8 %

Organic Chemistry Lecture 13b

Subject:

Nuclear magnetic resonance

Rating:

No votes yet

SocialTags:

Nuclear physics

Proton nuclear magnetic resonance

Carbon-13 nuclear magnetic resonance

Nuclear magnetic resonance spectroscopy

Topicity

Chemical shift

Nuclear magnetic resonance spectroscopy of carbohydrates

Deuterium

Chapter 13 * The N + 1 Rule If a signal is split by N equivalent protons, it is split into N + 1 peaks. Chapter 13 Chapter 13 * Equivalent protons do not split each other. Protons bonded to the same carbon will split each other if they are nonequivalent. Protons on adjacent carbons normally will split each other. Protons separated by four or more bonds will not split each other. Spin-spin Splitting Distance Chapter 13 Chapter 13 * Long-Range Coupling When the hydrogen atoms are four bonds or more apart, spin-?spin splitting is not normally observed. When it actually does occur it is called ?long-range coupling.? Chapter 13 * Splitting for Ethyl Groups

Chemistry Study Guide

Subject:

Rating:

No votes yet

SocialTags:

Atom

Chemistry Final Study Guide Chapter 1- Matter and Change Chemistry - is the study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes. Chemical ? any substance with a definite composition. Mass ? measure of the amount of matter Matter ? anything that takes up space Atom ? the smallest unit of an element that maintains the chemical identity of that element Element - pure substance that cannot be broken down into simpler, substances and is made of one type of atom Compound ? a substance that can be broken down into simple stable substances. Each compound is made from the atoms of two or more elements that are chemically bonded

Campbell Biology Chapter 2 outline

Subject:

Biology

Rating:

No votes yet

SocialTags:

Baryons

Matter

Tags:

ion

#AP Bio #CampbellBiology #Chapter 2 #Outline

SUBATOMIC PARTICLES Proton ? 1 positive charge (P+) Neutron ? no charge (N0) Electron ? 1 negative charge (E+) Nucleus An atom's dense central core, containing protons and neutrons. Electrons move around the nucleus Matter Anything that has mass and takes up space Elements Substance that cannot be broken down by a chemical reaction 92 occur naturally 25 of which are essential for life Bulk elements Required by the body in large amounts C N H O (make up 96% of the body) Trace elements Required by the body in small amounts Ultra trace elements Required by the body in minute amounts Atoms Smallest unit of matter that still retains properties of an element Weight Add proton and neutrons together for weight of nucleus Every proton and neutron weights one Dalton

AP Chemistry learning exercise

Subject:

Rating:

No votes yet

SocialTags:

Uranium

Tags:

Energy Calculation Problems Problem #1: A cubic block of uranium metal (specific heat = 0.117 J g?1 ?C?1) at 200.0 ?C is dropped into 1.00 L of deuterium oxide of "heavy water" (specific heat = 4.211 J g?1 ?C?1) at 25.5 ?C. The final temperature of the uranium and the deuterium oxide mixture is 28.5 ?C. Given the densities of uranium (19.05 g/cm3) and deuterium oxide (1.11 g/mL) what is the length of the side of the uranium cube? Problem #2: 175.0 g pure H2O was placed in a constant-pressure calorimeter and chilled to 10.0 ?C. 9.80 g pure H2SO4 (also at 10.0 ?C) was added, stirred and the temperature rose to 19.8 ?C. (a) What mass increased in temperature? (b) What was ?t? (c) What was the chemical reaction? (d) What do we assume about the specific heat?

AP Chem Notes

Subject:

Rating:

No votes yet

SocialTags:

Baryons

Tags:

Notes

South Pasadena ? AP Chemistry Name ________________________________ Period ___ Date ___/___/___ 2 ? Atoms and Elements ATOMIC STRUCTURE? Parts of Atoms: Most people already know that the atom is made up of three main parts, the _______________ and ______________ in the nucleus and the ______________ somewhere outside of the nucleus. Let?s summarize: proton neutron electron symbol charge location mass size (see below) Let?s make this more visual using information from the Chart of Fundamental Particles. If the proton were 10 cm in diameter? the size of an orange, how big would everything be? object actual size model size model proton 10-15 m 10 cm orange neutron 10-15 m electron 10-18 m atom 10-10 m

Chapter 2: Chemical Units and Their Identities

Subject:

Rating:

No votes yet

SocialTags:

Ion