Rank from most to least number of valence electrons. To rank items as equivalent, overlap them.

Arrange the elements in decreasing order of the number of valence electrons.

kr

ca

ba

br

li

f

as

sb

o

al

cl

si

na

ar

sr

Although amino acids have "acid" in their name, some are acidic in water solutions, some are basic, and others are neutral. propose an explanation for this observation based on the structures and descriptions of the amino acids below. 21.

Is it possible to change the strength of an acid? Explain how you would do this.

No two different elements will have the atomic number.-

Research to find out what Molarity (mol/L) is measuring includes citation. What is the common word used to describe the measure of Molarity in the simulation?

What should have only one idependent variable

What is the nature of the Ca-Cl bond in a molecule of calcium chloride (CaCl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.167 O A nonpolar covalent B. moderately polar covalent C.

Which statement is true about oxidation and reduction in an electrochemical cell? (1) Both occur at the anode. (2) Both occur at the cathode. (3) Oxidation occurs at the anode and reduction occurs at the cathode.

For a solar eclipse to occur,

How many times does the citric acid cycle occur for each molecule of glucose?

Which planet is made of mostly gas