The graph shows a car's velocity over time. During which time period does the car have the greatest acceleration?
A. Between 1 and 2 seconds
B. Between 0 and 1 seconds
C. Between 1 and 6 seconds
O D. Between 2 and 4 seconds

If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b.zinc7.14,c.copper 8.92,d.lead 11.34

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

All cells are made of four types of acids, lipids, proteins, and carbohydrates.