What ion can be combined with oxygen ion to form an ionic compound? a. carbon ion
b. calcium ion
c. chlorine ion
d. fluorine ion

which of the following families have elements having 5 velence electrons
a. alkali metals
b. chalcogens
c. pnictogens
d. halogens

What is the next step in muscle contraction after the actin changes shape? (apex)

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

What drives an advertising campaign?