OCR 21st Century C3

    Cards (169)

    • Where are metals located on the periodic table?
      To the left
    • What are the three types of bonding?
      Ionic, covalent, and metallic
    • Why do atoms bond?
      To gain a full outer shell
    • What is ionic bonding?
      Transfer of electrons between metals and non-metals
    • What is covalent bonding?
      Sharing of electrons between two non-metals
    • What is metallic bonding?
      Electrostatic force between positive ions and electrons
    • How can you determine if a compound is ionic or covalent?
      By identifying the types of atoms bonded
    • What type of bonding is present in carbon dioxide?
      Covalent bonding
    • What type of bonding is present in sodium chloride?
      Ionic bonding
    • What is the dot and cross diagram used for?
      To illustrate ionic bonding
    • What happens to aluminum in ionic bonding?
      It loses three electrons
    • What charge does aluminum have after losing electrons?
      Three plus charge
    • What is the charge of fluorine after gaining an electron?
      One minus charge
    • What are the properties of ionic compounds?
      Brittle, high melting points, good insulators
    • Why do ionic compounds conduct electricity in liquid form?
      Because ions are free to move
    • What is a giant ionic lattice?
      A structure formed by strong ionic bonds
    • How does the charge of an ion affect its melting point?
      Greater charge leads to higher melting point
    • What is the formula for calcium oxide?
      CaO
    • How do you write the formula for sodium oxide?
      Na2O
    • What is the formula for magnesium nitride?
      Mg3N2
    • What is the charge of ammonium ion?
      NH4 plus
    • What is the formula for magnesium hydroxide?
      Mg(OH)2
    • What is covalent bonding between non-metals?
      Sharing of electron pairs
    • What are simple molecular compounds?
      Compounds with weak intermolecular forces
    • What is the difference between ionic and covalent compounds?
      Ionic compounds are hard, covalent are soft
    • What is the structure of diamond?
      Hard, rigid structure with strong bonds
    • Why is graphite a good conductor of electricity?
      Due to delocalized electrons
    • What is the structure of graphite?
      Layered structure with weak forces
    • What are nanoparticles?
      Particles sized 1-200 nanometers
    • How do you convert nanometers to meters?
      Divide by 10910^9
    • What is the formula for converting 10 nanometers to meters?
      10÷109=10 \div 10^9 =108 m 10^{-8} \text{ m}
    • What is the significance of alloys?
      They improve strength and resistance to corrosion
    • What is the structure of metals?
      Regular arrangement of fixed positive ions
    • Why are metals malleable?
      They can slide past each other
    • Why are metals good conductors of electricity?
      Due to mobile delocalized electrons
    • What is the difference between pure metals and alloys?
      Alloys have distorted structures
    • What is the role of delocalized electrons in metallic bonding?
      They allow conductivity and malleability
    • What is the significance of the size of nanoparticles?
      They have unique properties due to size
    • What is the use of graphene?
      Used in flexible electronic displays
    • What is fullerene used for?
      Drug delivery and cancer treatment
    See similar decks