Unit 1 – Matter and Chemical Bonding – Flashcards

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question
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
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