The Atomic and Nuclear Structure of an Atom The atom has three main components the protons‚ neutrons‚ and electrons. The protons and neutrons make up the nucleus‚ while the electrons are found outside the atom’s nucleus. Each component of an atom has a charge to it. The protons have a positive charge. The electrons have a negative charge‚ and the neutrons have a neutral charge. The atoms also have a charge. For example hydrogen can be negative‚ positive or neutral. These are called
Free Atom Electron Neutron
I have known what a pharmacist is for a very long time. It was easy for me to understand what a pharmacist is because of my father who is a veterinarian. It was fairly simply to correlate between the two because my dad gives medicine to animals and pharmacists give medicine to people. This was my understanding as a child. As I grew older and began to understand more things‚ I happened upon the career term “Nuclear Pharmacist”. I knew what a pharmacist was and I know that the “nuclear” part probably
Premium Medicine Physician Pharmacology
D) Blood Answer: D Diff: 2 Page Ref: 31 31) Select the correct statement about isotopes. A) Isotopes of the same element have the same atomic number but differ in their atomic mass. B) All the isotopes of an element have the same number of neutrons. C) All the isotopes of an element are radioactive. D) Isotopes occur only in the heavier elements. Answer: A Diff: 2 Page Ref: 29 32) The four elements
Premium Metabolism Protein Biology
station 60km south through the natural flux of organic matter settling from the surface but rather that the Mariana Trench acts as a deep natural sediment trap that supports the microbial life that was observed through comparing the the abundance of Pb isotopes from both sites. This type of setting could allow for “the collection and focussing of sediments and relatively young organic matter‚ such as bottom-water aggregates that are recurrently suspended and deposited at shallower
Premium Ocean Oceanography
d 1. What is the correct formula for the carbonate ion? (a) CH3COO(b) Cl(c) CO22(d) CO32(e) (COO-)2 c 2. What is the name of Fe(OH)3? (a) (b) (c) iron hydroxide iron trihydroxide iron (III) hydroxide (d) (e) iron (II) hydroxide none of these d 3. From the following ionic compounds‚ choose the name-formula pair that is not correctly matched. (a) (b) (c) (d) (e) sodium sulfide ammonium nitrate zinc hydroxide sodium sulfate calcium oxide Na2S NH4NO3 Zn(OH)2 Na2SO3 CaO b 4. How many
Premium Oxygen Atom Oxide
Chapter 22 The Origin and History of Life on Earth * The universe began with a cosmic explosion called the Big Bang about 13.7 billion years ago (bya). * Our solar system began about 4.6 bya after one or more local supernova explosions. * The Earth is estimated to be 4.55 billion years old. * The period between 4.0 and 3.5 billion years ago marked the emergence of life on our planet. * Section 22.1: Origin of Life on Earth: * Four Overlapping Stages of the Origin
Premium Evolution DNA
WATER AS OUR NATURAL RESOURSE There are more than 326 million trillion gallons of water on Earth. Less than 3 % of all this water is fresh water and of that amount‚ more than two-thirds is locked up in ice caps and glaciers. With so much water around it seems like there is enough to see us through for millions of years. But did you know that even water‚ which seems to be in abundance‚ might one day become scarce? Each time you throw something as garbage‚ think of where it will finally end up. Whether
Premium Water Water pollution
Nervous System The nervous system is the part of an animal’s body that coordinates the voluntary and involuntary actions of the animal and transmits signals between different parts of its body. In most types of animals it consists of two main parts‚ the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists mainly of nerves‚ which are long fibers that connect the CNS to every other part of the body. The PNS includes motor
Premium Atom Proton Neutron
CHEMISTRY FOR HUMAN WELFARE: IT’S PROMISES AND CONCERNS 2011 had been officially declared “The International Year of Chemistry” t o commemorate the achievements of chemistry and its contributions to mankind. It is so fitting that 2011 is the centenary year for the award of Nobel Prize to Marie Curie for her discovery of Radium and Polonium. Also this is the 150th birth anniversary of Dr. P .C Roy. All living things in this beautiful world are nothing but
Premium Nuclear fission Chemistry Chemical substance
A fusion bomb is a bomb that uses nuclear fusion to gain energy. A specific fusion bomb would be a hydrogen bomb or also called the H-bomb. How the bomb works is it uses deuterium and tritium (which are both isotopes of hydrogen) and they fuse into helium releasing great amounts of energy. The bomb itself was thought up by many people but Edward Teller was the one who took the ideal and ran with it. He created and tested multiple Hydrogen Bombs in his life. The idea of this bomb was floating in
Premium Nuclear weapon Nuclear fission