Which best explains why sodium is more reactive than magnesium?
A
Sodium has only one valence electron, while magnesium has two.
B
Sodium atoms typically have one more neutron than magnesium atoms do.
C
Sodium forms ions with a charge of 2+, but magnesium forms ions with a charge of 1+.
D
Sodium atoms tend to attract the electrons of other atoms more than magnesium atoms do.

How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.

Robert leaves a chocolate bar in his car while attending school all day. when he goes to his car in the afternoon, the bat has changed into gooey liquid. what happened to the chocolate bar

Which statement explains which component is likely to be more powerful in explaining a scientific phenomenon? a) component c, because a theory is often passed on possibility and not certainty b) component d, because a hypothesis is often based on possibility not certainty c) component c, because the ability to explain several occurrences in the natural world is a characteristic of a hypothesis d) component d, because the ability to explain several occurrences in the natural world is a characteristic of a theory