What are 4 caristics of metals

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.