Ask the students to answer the following exercises in their notel A Answer the crossword puzzle below. Fill the boxes with the correct answer. ACROSS 2 examples are water, methane, sodium 1 elements found on the right side of the periodic table chloride 5 DOWN 4 made up of two or more atoms of the 3 examples are hydrogen, iron, same kind table is the tabular arrangement 6 represented by the symbol Ca of elements according to their properties 8 represented by the symbol Pb 9 generally Listes sour 10 used to test acidity or basicity 7 examples are soap and drain cleaner​