Chapter 2 part A
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Matter | Is anything that has mass and occupies space.
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| States of Matter | Solid, Liquid and Gas
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| Energy | Is the capacity to do work or put matter into motion.
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| Kinetic Energy | Is energy in action, motion
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| Potential Energy | Stored energy, not moving yet
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| Forms of energy | Chemical, Electrical, Mechanical and Radiant.
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| Atoms | Smallest non-living unit
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| Thermodynamics | Energy being converted from one form to another.
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| Protons | Carry a pos charge weigh 1 amu
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| Neutrons | Have no charge. weight 1 amu
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| Electrons | Carry a neg charge. weigh 0 amu. Involved in all chemical reactions.
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| Protons+Neutrons | Atomic Weight
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| Protons and Electrons | No charge
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| Planetary Model | Simplified and outdated because it incorrectly depicts electrons in orbits.
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| Orbital Model | Current model used that depicts orbitals, probable regions where an electron is most likely to be located.
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| Identify a Element | Atomic Number, Mass Number, Isotopes and Atomic Weight.
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| Atomic Number | Number of protons in nucleus and also electrons.
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| Mass Number | Total number of protons and neutrons in nucleus.
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| Isotopes | Atoms contain same number of protons but differ in the number of neutrons they contain.
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| Radioisotopes | Isotopes that decompose to more stable forms. In contrast.
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| Radioactivity | As isotope decays, subatomic particles that are being given off release a little energy
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| Molecule | General term for 2 or more atoms bonded together.
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| Compound | Specific molecule that has 2 or more different kinds of atoms bonded together.
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| Mixtures | Solutions, Colloids and Susoensions
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| Solutions | Are homogeneous and particles are dissolved. Usually Transparent.
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| Solvent | Substances present in greatest amount. Does the Dissolving
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| Solute | Substance dissolved in solvent. What is being dissolved.
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| Concentrations of Solutions | Percent of Solute, Milligrams per deciliter and Molarity.
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| Colloids | Also known as Emulsions, Heterogeneous, Particles not evenly mixed. Cloudy or Milky look.
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| Suspensions | Heterogeneous, Mixtures that contain large and visible particles that do not settle. Italian Dressing.
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| Chemical Bonds | Energy relationships between electrons of reacting atoms.
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| Electron Shells | The area around the nucleus.
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| Valance Shell | The outer most electron shell.
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| Chemical Bonds | Iconic, Covalent and Hydrogen
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| Iconic Bonds | Ions are atoms that have gained or lost electrons and become charged.
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| Anion | Neg charge, Atom that gained one or more electrons
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| Cation | Pos charge, Atom that lost one or more electrons
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| Covalent Bonds | Sharing of 2 or more valence shell electrons between 2 atoms.
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| Types of Covalent Bonds | Polar and Non-polar
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| Non Polar Covalent Bonds | Equal sharing of electrons between atoms, balanced. In a straight line.
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| Polar Covalent Bonds | Unequal Sharing of electrons between 2 atoms. In a V shape.
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| Hydrogen Bonds | Not a true bond, more of a weak magnetic attraction.
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| Chemical Equations | Occur when chemical bonds are formed, rearranged or broken.
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| Reactants | Substances entering into reaction together.
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| Products | Chemical end products
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| Chemical Reactions | Synthesis, Decomposition and Exchange.
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| Synthesis | Combination, involve atoms or molecules combining to form large more complex molecule.
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| Decomposition | Involve breakdown of a molecule into smaller molecules or its constituent atoms
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| Exchnge | Reactions, also called displacement reactions involve both synthesis and decomposition.
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| Redox Reactions | Atoms are reduced when they gain electrons and oxidized when they lose electrons.
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| Exergonic | Reactions result in a net release of energy. Energy in.
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| Endergonic | Reactions result in a net absorption of energy. Energy Out.
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| Catalysts | Increase the rate of reaction without being chemically changed or becoming part of the product.
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Or sort by any of the columns using the down arrow next to any column heading.
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