Vocabulary. Help Fred complete questions for quantities taking into account the following structures: How many + [plural countable food/drink] + are there + complement? and How much + [uncountable food/drink] + is there + complement?There are clues which are the structures and the rest you have to guess by selecting the words you think are correct.
In this interactive and animated object, students distribute the valence electrons in simple covalent molecules with one central atom. Six rules are followed to show the bonding and nonbonding electrons in Lewis dot structures. The process is well illustrated with eight worked examples and two interactive practice problems.