Unit 1 – Matter and Chemical Bonding – Flashcards
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| What is a physical change? |
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| -No Reaction -Change in State Ex. Coffee beans are crushed |
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| What is a chemical change? |
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| -Reactions -‘Something new is formed’ Ex. Burning of leaves |
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| What is Qualitative? |
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| -No Numbers involved Ex. Bob is tall |
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| What is Quantitative? |
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| -Numbers are involved Ex. Bob is 6 feet tall |
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| Name at least 5 physical properties? |
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| -State -Color -Volatile -Lustre -Malleability -Viscosity -Ductility -Texture -Hardness -Density -Combustability -Clarity -Conductivity -Cohesion/Adhesion -Melting/Boiling point -Solubility (ex.In water or whatever substance) |
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| Name at least 3 chemical properties? |
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| -Unknown Color Change -Light -Heat -New gas or solid is formed/New something is formed |
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| Wood burnt to ashes. Physical or chemical property? |
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| Chemical |
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| Sodium is a soft metal. Physical or chemical property? |
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| Physical |
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| Hydrogen is a colourless gas. Physical or chemical property? |
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| Physical |
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| Gold does not tarnish. Physical or chemical property? |
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| Chemical |
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| John is 7 feet tall. Qualitative or quantitative? |
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| Quantitative |
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| Potassium floats on water, but reacts vigorously with the water. Qualitative or quantitative? |
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| Qualitative |
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| Boiling point of water is 100 degrees celsius. Qualitative or quantitative? |
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| Quantitative |
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| Nitrogen is a colourless gas at room temperature. Qualitative or quantitative? |
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| Qualitative |
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| Addition of flour and water. Physical or chemical change? |
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| Physical |
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| Formation of dew. Physical or chemical change? |
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| Physical |
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| Rotting of food. Physical or chemical change? |
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| Chemical |
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| Explosion of a fire cracker. Physical or chemical change? |
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| Chemical |
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| What is a pure (substance)? |
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| -Has 1 type of particle -Element and Compound -Opposite from a mixture |
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| What is a mixture? |
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| -Has 1 type of particle -Heterogeneous(Mechanical mixture) -Homogeneous(Solution) |
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| What is a heterogeneous mixture? |
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| -Also called a mechanical mixture -2 or more phases -Can be separated Ex. Rock in water, oil and water |
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| What is a homogeneous mixture? |
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| -Also called a solution -1 phase -Can't be separated (difficult/ impossible to do) Ex. Air, apple juice, steel |
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| Element |
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| -On the periodic table -1 thing Ex. Hydrogen (H) |
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| Compound |
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| -Elements bonded together/multiple things off the PERIODIC TABLE that are bonded together -Multiple things Ex. Water (H2O) |
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| What is a property? |
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| Used to describe matter and its interactions with other matter |
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| Milk. Homogeneous or heterogeneous mixture or pure substance? |
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| Heterogeneous |
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| Sand and water. Homogeneous or heterogeneous mixture or pure substance? |
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| Heterogeneous |
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| Clean air. Homogeneous or heterogeneous mixture or pure substance? |
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| Homogeneous |
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| Aspirin. Homogeneous or heterogeneous mixture or pure substance? |
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| Homogeneous |
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| Vinegar. Homogeneous or heterogeneous mixture or pure substance? |
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| Homogeneous |
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| Raisin Bran. Mechanical mixture or solution or pure substance? |
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| Mechanical mixture |
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| House paint. Mechanical mixture or solution or pure substance? |
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| Mechanical mixture |
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| Clear tea. Mechanical mixture or solution or pure substance? |
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| Solution |
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| Clear honey. Mechanical mixture or solution or pure substance? |
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| Solution |
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| Oxygen. Mechanical mixture or solution or pure substance? |
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| Pure substance |
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| Sulphur. Mechanical mixture or solution or pure substance? |
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| Pure substance |
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| Gold. Mechanical mixture or solution or pure substance? |
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| Pure substance |
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| [image] |
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-Atomic Number(p+ ; e-) -; Very top left -Atomic Mass(p+-no) -; Very top right -Electronegativity -; Under atomic number/middle left |
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| What is are isotopes? |
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| When the same element has different mass' |
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| In Fluorine (F) determine how many electrons, protons, and neutrons it's atom contains. |
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| Electrons = 9 Protons = 9 Neutrons = 10 |
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| What is a period? |
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| Horizontal rows same number of orbits |
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| What is a family/group? |
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| Vertical columns same number of valence electrons similar properties |
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| What are valence electrons? |
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| Electrons in the outermost shell |
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| What is an atomic radius? |
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| A measure of size: the bigger the period number, the bigger the atomic radius. If its in the same period, then the more protons, the smaller the radius. OR -Lowest ionization to the left-bottom of the periodic table -Highest ionization to the top-right of the P.T. |
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| What is ionization energy? |
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| The energy to remove an electron -Lowest ionization to the left-bottom of the periodic table -Highest ionization to the top-right of the P.T. |
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| What is electron affinity? |
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| Energy released when electron is gained |
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| Indicate the order of groups and families from left to right of the periodic table. |
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| 1. Alkali Metals 2.Alkali earth metals 3. Transition metals 4. Halogens 5. Noble Gases |
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| Electronegativity. 0 - 0.69. Polar Covalent, covalent, or Ionic? |
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| Covalent |
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| Electronegativity. 0.7 - 1.69. Polar Covalent, covalent, or Ionic? |
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| Polar Covalent |
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| Electronegativity. 1.7 and up. Polar Covalent, covalent, or Ionic? |
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| Ionic |
