chemistry help please?

Question

why are the atomic mass listed on the periodic table decimal values, and not whole numbers?

Answer 1

Unfortunately the particles that make up atoms do not have nice neat weights. The number of protons/neutons/electrons is always an integer, but the weights are not.

Answer 2

once you think of with regard to the characteristics cutting-edge in a real "soul mate" dating, what one be conscious comes up maximum often on the proper of your checklist? Is it Chemistry? in all risk. that's often defined as a feeling that leaves you breathless, excited and susceptible interior the knees. palms sweat, the midsection races and the physique tingles with worried anticipation. the top maximum could-be enthusiasts come to is that in the event that they journey those extreme emotions in direction of somebody, they have the muse for an proper and lasting dating. proper? perhaps not. For this definition of chemistry is limited to a minimum of one's actual reaction to a distinctive individual. It lacks an entire measurement it is living in our values, ideals, personalities and worldview. with a view to renowned you have the main suitable connection with a skill (or present) important different, it is very important to have a user-friendly expertise of what genuine chemistry includes, that encompass it. that's often puzzling to do. This extreme, actual hobby is the stuff that Oscar prevailing video clips and superb-advertising books are made up of. So, take a step returned for a minute and notice in case you realize your self. :-)

Answer 3

The elements each weigh different amounts and in order to be as precise as possible in a they can't round the numbers up or down to the nearest integer. since Oxygen is 15.999 you can round up to 16 in most situations. but you might check with your teacher to see what he/she expects in percision.

Answer 4

they are relative masses compared to carbon atoms. They are found out by experiment. percentage errors occur.