C3+-+Syllabus+Checklist

**C3. Atoms, elements and compounds**

 * ======Serial No====== || ====== **Assessment Statement.**  ======

//All candidates should be able to://
|| ======Covered in Class====== || ======Revised @ home====== || ======I am certain====== || ======I need help====== ||
 * ======**3.1 Physical and chemical changes**====== ||
 * ====== 1  ====== || ======Identify physical and chemical changes, and understand the differences between them.====== ||   ||   ||   ||   ||
 * ======**3.2 Elements, compounds and mixtures**====== ||
 * ====== 1  ====== || ======Describe the differences between elements, compounds and mixtures.====== ||   ||   ||   ||   ||
 * ====== 2  ====== || ======Demonstrate understanding of the concepts of element, compound and mixture.====== ||   ||   ||   ||   ||
 * ======**3.3 Atomic structure and the Periodic Table**====== ||
 * ====== 1  ====== || ======Describe the structure of an atom in terms of electrons and a nucleus containing protons and neutrons.====== ||   ||   ||   ||   ||
 * ====== 2  ====== || ======Describe the build-up of electrons in ‘shells’ and understand the significance of the noble gas electronic structures and of valency electrons (the ideas of the distribution of electrons in s and p orbitals and in d block elements are not required).====== ||   ||   ||   ||   ||
 * ====== 3  ====== || ======State the relative charges and approximate relative masses of protons, neutrons and electrons.====== ||   ||   ||   ||   ||
 * ====== 4  ====== || ======Define //proton number// and //nucleon number//====== ||   ||   ||   ||   ||
 * ====== 5  ====== || ======Use proton number and the simple structure of atoms to explain the basis of the Periodic Table (see C9), with special reference to the elements of proton number 1 to 20.====== ||   ||   ||   ||   ||
 * ====== 6  ====== || ======Define //isotopes.//====== ||   ||   ||   ||   ||
 * ======**3.4 Ions and ionic bonds**====== ||
 * ====== 1  ====== || ======Describe the formation of ions by electron loss or gain.====== ||   ||   ||   ||   ||
 * ====== 2  ====== || ======Describe the formation of ionic bonds between metals and non-metals as exemplified by elements from Groups I and VII.====== ||   ||   ||   ||   ||
 * ====== 3  ====== || ======Explain the formation of ionic bonds between metallic and non-metallic elements.====== ||   ||   ||   ||   ||
 * ====== 4  ====== || ======Describe the lattice structure of ionic compounds as a regular arrangement of alternating positive and negative ions, exemplified by the sodium chloride structure.====== ||   ||   ||   ||   ||
 * ======**3.5 Molecules and covalent bonds**====== ||
 * ====== 1  ====== || ======State that non-metallic elements form nonionic compounds using a different type of bonding called covalent bonding.====== ||   ||   ||   ||   ||
 * ====== 2  ====== || ======Draw dot-and-cross diagrams to represent the sharing of electron pairs to form single covalent bonds in simple molecules, exemplified by (but not restricted to) H2, Cl2, H2O, CH4 and HCl.====== ||   ||   ||   ||   ||
 * ====== 3  ====== || ======Describe the differences in volatility, solubility and electrical conductivity between ionic and covalent compounds.====== ||   ||   ||   ||   ||
 * ====== 4  ====== || ======Draw dot-and-cross diagrams to represent the multiple bonding in N2, C2H4 and CO2.====== ||   ||   ||   ||   ||
 * ======**3.6 Giant structures**====== ||
 * ======1====== || ======Describe the giant covalent structures of graphite and diamond.====== ||  ||   ||   ||   ||
 * ======2====== || ======Relate their structures to the use of graphite as a lubricant and of diamond in cutting.====== ||  ||   ||   ||   ||
 * ======3====== || ======Describe the structure of silicon (IV) oxide (silicon dioxide).====== ||  ||   ||   ||   ||