Which choice below contains an example of each type of element (metal, metalloid, non metal)? A) Xe, P, Sc, Li
B) Ar, P, Ga, K
C) I, Se, Cr, Na
D) CI, As, Co, Be

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol