If the valence electrons were removed, what would be the ion charge of the element? Na =

-1
+1
-3
+3

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate