You can use the periodic table to help you understand why some atoms form molecules while others do not. Argon and chlorine are both nonmetals.
Argon exists in nature as individual argon atoms. Chlorine exists in nature as
two chlorine atoms covalently bonded to each other. Why does this occur?

A. Argon is unstable, so it does not share electrons with other atoms like
chlorine does.
B. Argon cannot form covalent bonds because it already has
an even number of valence electrons.
C. An argon atom is already stable, but
a chlorine atom only becomes stable when it transfers an electron to another
chlorine atom.
D. An argon atom is already stable with eight valence
electrons, but a chlorine atom must share two electrons with another chlorine
atom to reach eight valence electrons and become stable.

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Seen in some gram-positive bacilli, occurs when only the inner portion of a cell wall is deposited across the dividing cell. this new cross wall puts tension on the outer layer of the old cell wall. eventually, the outer wall breaks at its weakest point with a snapping movement that tears it most of the way around. the daughter cells can then remain hanging together almost side by side being held by a small remnant of the original outer wall. choose from the following statements the ones that correctly discuss reproduction using binary fission in a bacterial cell. select all that apply. view available hint(s) select all that apply. due to the stretching of the cytoplasmic membrane, both cells will contain a complete genome. each daughter cell will contain an equal number of organelles. the daughter cell will be a permanently smaller copy of the mother cell but will contain a complete genome. each daughter cell is an exact copy of the other, both genetically and morphologically

What are the student's observations and inferences before he starts his investigation?