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Physical Science Semester 2 Final Review

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  • Why do you use roman numerals when naming an ionic compound?
    when the cation can be found in groups 3-12
  • Heat flows in what direction?
    high to low
  • What is the measure of amount of kinetic energy of particles?
    Temperature
  • What are the products of combustion?
    Carbon Dioxide and Water
  • How does an exothermic reaction make the surface of the object feel? Why?
    Hot - because it releases heat
  • Define ion.
    atoms with a different number of electrons - have a positive or negative charge
  • Why do atoms bond?
    stability - to have 8 valence electrons
  • During conduction, how is energy transferred?
    particles collide
  • Calculate the heat required to head 250 grams of water from 21 C to 53 C. The specific heat capacity of water is 4.18 J/g C. Use the equation - Q=mC(Temp Final - Temp Initial)
    33,440 J
  • What is deposition?
    Gas to a solid
  • What is sublimation?
    solid to a gas
  • What is defined as matter with a fixed composition?
    Substance
  • List 3 physical properties. List 3 chemical properties.
    Physical Properties: Color, Mass, Boiling Point Chemical Properties: Ability to Rust, Reactivity, Flammability
  • If an atom has 20 protons, 20 electrons, and 21 neutrons, what is the mass number? What is the element?
    Mass number - 41 Element/Atomic number - Calcium
  • Define isotope.
    atoms with a different number of neutrons and different mass
  • Can substances be broken down using a physical process? Why?
    No
  • List 3 chemical changes
    Rotting Burning Rusting
  • Write the formula for Cobalt (II) Phosphate
    Co3(PO4)2
  • What is the name for the following compound?
    Aluminum Sulfide
  • This is a Bohr diagram for what element? How many protons, neutrons, electrons, and valence electrons does it have?
    Sulfur Protons - 16 Neutrons - 16 Electrons - 16 Valence Electrons - 6
  • How do I determine if the bond is ionic or covalent?
    Ionic bonds - elements on the left and right side of the staircase. Covalent bonds - both on the right side of the staircase
  • How do I calculate the mass number?
    protons + neutrons
  • Balance this equation
    answer on board
  • What type of thermal transfer drives plate tectonics?
    convection
  • Write the name for the following.
    Dinitrogen Monoxide
  • This is symbol for what type of nuclear radiation particle?
    Alpha
  • What state of matter does not have a definite shape or volume?
    Gasses
  • This is a symbol for what type of nuclear radiation particle?
    Beta
  • Write the formula for Arsenic Pentoxide.
    AsO5
  • What will speed up a chemical reaction?
    Adding heat Stirring Adding a catalyst
  • Can substances be broken down using a chemical process? Why?
    Yes
  • What is a combination of two or more substances?
    Mixture