quantum mechanics‚ Folger‚ a senior editor at Discover‚ notes‚ an electron‚ proton‚ or other subatomic particle is "in more than one place at a time‚" because individual particles behave like waves‚ these different places are different states that an atom can exist in simultaneously. Ten years ago‚ Folger writes‚ David Deutsch‚ a physicist at Oxford University‚ argued that it may be possible to build an extremely powerful computer based on this peculiar reality. In 1994‚ Peter Shor‚ a mathematician
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3 Questions I have: ● According to Asimov‚ when do people solve problems or make discoveries‚ and why? ● How does Asimov include the scientific information of Archimedes’ and Kekule’s discoveries necessary to help understand them better? ● What was Asimov’s idea behind “Eureka! Eureka!” and how did it fit into the purpose of the story? In the story The Eureka Phenomenon by Isaac Asimov‚ Asimov includes the scientific information of Archimedes’ and Kekule’s discoveries to help the audience und
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organs working together. Organ- made up of‚ similar cells that performs a specific function tissue Cell-fundamental unit of life Organell- membrane enclosed structure that performs a specific function Molecule- cluster of small chemical units atoms held together by molecular bond Deoxyribonucleic acid CH. 2 Matter- anything that occupies space and has mass Element- a substance that cant be broken down to other substances by ordinary chemical means. 92 elements Compound-two or more
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HYDROGEN BONDING: Hydrogen bonding is a bonding type consisting of dipole and dispersion forces. A hydrogen bond is the attractive force between a hydrogen atom attached to a molecule and an atom of a different molecule. According to the Pauling scale of electro-negativities of the elements‚ it can be viewed that the three most electronegative elements in the periodical table are nitrogen‚ oxygen and fluorine. These are also called heteroatoms. The heteroatoms have a partial negative charge while
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Don’t ever simply copy down an answer without knowing how to get there. BUT finally do check all your answers carefully here. You can also read the examiner’s report for each question. 1. (i) atoms of the same element with different numbers of neutrons/different masses (1) 1 (ii) 79Br 35 protons‚ 44 neutrons‚ 35 electrons (1) 81Br 35 protons‚ 46 neutrons‚ 35 electrons (1) 2 (iii) (1s2)2s22p63s23p63d104s24p5 (1) 1
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2: Stable vs. Unstable atoms‚ electron shells Stable Atoms: have 2 electrons max in the 1st shell & all other shells must have a max of 8 - Even # of electrons = unreactive (e.g. Helium: 2 protons‚ 2 neutrons]- Nucleus; 2 electrons]- Shell Unstable Atoms: is any atom that has a shell with an odd # of electrons therefore the shell is not filled to the max - Odd # of electrons = reactive (e.g. Hydrogen: 1 protons]- nucleus‚ 1 electron]- shell Isotopes: Are atoms of the same element but
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very first stars that lit up the dark skies of early universe.3 As the baby stars contracted‚ temperature in the core rose to extreme level triggering nuclear fusion/hydrogen fusion. Nuclear fusion is a process in which two or more atoms fuse to synthesize heavier atom and this process of fusing releases large quantities of energy.4 All the ingredients/elements needed to make the earth and all life forms on earth were created in the cores of stars.5 These ingredients are then released out of the core
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entire container in which it is confined. LIQUID Liquids: liquid are close together with no regular arrangement. liquid vibrate‚ move about‚ and slide past each other in haphazardly manner. . SOLIDS Solids : In a solid the particles (ions‚ atoms or molecules) are tightly packed‚ usually in a regular pattern called crystal lattice. The forces between particles are strong so that the particles cannot move freely but can only vibrate. As a result‚ a solid has a stable‚ definite shape‚ and
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ways in which we use electricity‚ and to supply information on electricity itself. Electricity plays a big part in the lives of many people‚ yet few know how it actually works‚ so lets start with the basics: The basic unit of all matter is an atom. The atom
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Chapter 2 Extra Credit 1. The diffirence between atoms and molecules is that atoms are the smallest units of matter and can not be divided by chemical means. Molecules are made up of atoms of the same kind that are together in a group. The difference between covalent bonds and ionic bonds are that covalent bonds have 2 atoms sharing the same electron. Ionic bonds occur when an atom takes one electron away from another atom. 2. Adhesion and Cohesion differ because adhesion is when 2 substance
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