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Hal's user avatar
Hal
  • Member for 9 years, 1 month
  • Last seen more than a month ago
37 votes
6 answers
6k views

May I treat units (e.g. joules, grams, etc.) in equations as variables?

25 votes
3 answers
8k views

Why can there not be more than one sigma bond in a set of bonds?

23 votes
2 answers
8k views

Which relatively simple molecules violate the octet rule?

20 votes
2 answers
2k views

Is there a function to approximate atomic mass from the atomic number?

12 votes
1 answer
24k views

Is the d-block ever part of the valence electrons?

12 votes
3 answers
2k views

Are electron shells probability distributions?

12 votes
2 answers
27k views

What's the difference between a tetrahedron and a trigonal pyramid?

8 votes
2 answers
1k views

Why does my professor use both the upper, and the lower, case literal of a letter to symbolize the same concept?

7 votes
1 answer
345 views

Do I understand why heat capacity is called 'heat *capacity*'?

6 votes
2 answers
573 views

Is there a characteristic that characterizes all, and only, metals?

6 votes
2 answers
4k views

Why does the quantum number n limit the value of l, and why does l, likewise, limit the value of m?

6 votes
2 answers
513 views

Does the term 'silver nitrate' express all of its constituent chemical elements?

5 votes
2 answers
29k views

What kind of math should I expect in first year chemistry?

5 votes
1 answer
122 views

Why is the gram no longer a function of the atomic mass number?

4 votes
2 answers
15k views

What do the numerals on the top right corner of the cells in the periodic table represent?

4 votes
2 answers
6k views

Why is the atomic radius of krypton smaller than that of potassium?

3 votes
1 answer
132 views

In order to solve for this equation for heat capacity, do I need to treat it as a system of equations?

2 votes
0 answers
147 views

Is there an algorithm for ascertaining the relative size of an atomic/ionic radius?

2 votes
0 answers
37 views

Should I consider the quantity of each atom when estimating the relative lattice energies of two compounds?

2 votes
0 answers
71 views

Do any substances work like consumers of hair moisturizer believe it to work? [closed]

2 votes
2 answers
2k views

Does helium have a 2s orbital?

2 votes
3 answers
874 views

Why do some diagrams of some molecules show the bonds of only some of their submolecules?

1 vote
1 answer
2k views

What word, or phrase, do chemists use to describe the color saturation of a solution?

1 vote
2 answers
11k views

Why does the phosphate ion have resonance structures?

1 vote
1 answer
318 views

When expressing a quantity, do the non-significant figures determine whether you round up the last significant figure?

1 vote
1 answer
2k views

How is a carboxylic acid acidic?

1 vote
1 answer
145 views

My text seems to say that the high(est) energy orbitals are not valence orbitals - everything else says otherwise. What's true?

1 vote
0 answers
2k views

Why are electron configurations more stable when there are 8 electrons in the outer shell? [duplicate]

1 vote
2 answers
7k views

Why is it the case that KE = 0.5mv^2

1 vote
1 answer
84 views

Is there a term that denotes 'molecules and molecular constituents'?