( ( Be ( able ( to ( ( classify ( ( ( ( an element ) ( as ( a metal ) ) ) , ) ( ( nonmetal or ) semimetal ) ) ) ( based ( on ( ( experimental observations ) ( of ( ( ( physical and ) chemical ) properties ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Be) (ADJP (JJ able) (S (VP (TO to) (VP (VB classify) (NP (NP (DT an) (NN element)) (PP (IN as) (NP (DT a) (NN metal))) (, ,) (ADJP (JJ nonmetal) (CC or) (JJ semimetal))) (PP (VBN based) (PP (IN on) (NP (NP (JJ experimental) (NNS observations)) (PP (IN of) (NP (ADJP (NN physical) (CC and) (NN chemical)) (NNS properties))))))))))) (. .)))
Be able to classify an element as a metal, nonmetal or semimetal based on experimental observations of physical and chemical properties.
(ROOT (S (NP (NP (NNS Elements)) (PP (IN on) (NP (NP (DT the) (JJ periodic) (NN table)) (PP (IN of) (NP (DT the) (NNS elements)))))) (VP (VBP are) (VP (VBN classified) (PP (IN into) (NP (NP (NNS categories)) (PP (JJ such) (IN as) (NP (NNS metals) (CC and) (NNS nonmetals))))))) (. .)))
Elements on the periodic table of the elements are classified into categories such as metals and nonmetals.