Ma juhtusin nägema sellist lahedat artiklit, dialoogi keemia õpetaja/ isa ja tütre vahel. Tütar on sellises eas, et talle meeldib küsida miks küsimusi...ea iseärasus.
Kopeerisin selle vestluse ka siia, sest minu meelest on see midagi nii lõbusat ja toredat ning isegi südant soojendavat, kuidas isa räägib oma tütrega kui täiskasvanu, mitte kui kolmeaastasega.
Tundub, et ta on justkui hea isa. :) originaal pärineb:http://www.scq.ubc.ca/quarterly011/0101mcneil.html
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I happened to see an awesome article about how chemistry teacher slash dad talks to his daughter when she likes to ask Why for almost everything.
The age thing, y'all know.
I will copy the conversation here. I found it so amusing the way the dad explains her like she is not 3-year-old, but much older, something like his students.
He seems to be like a very good father to his child. :)
The original you can find: http://www.scq.ubc.ca/quarterly011/0101mcneil.html
SARAH: Daddy, were you in the shower?
DAD: Yes, I was in the shower.
SARAH: Why?
DAD: I was dirty. The shower gets me clean.
SARAH: Why?
DAD: Why does the shower get me clean?
SARAH: Yes.
DAD: Because the water washes the dirt away when I use soap.
SARAH: Why?
DAD: Why do I use soap?
SARAH: Yes.
DAD: Because the soap grabs the dirt and lets the water wash it off.
SARAH: Why?
DAD: Why does the soap grab the dirt?
SARAH: Yes.
DAD: Because soap is a surfactant.
SARAH: Why?
DAD: Why is soap a surfactant?
SARAH: Yes.
DAD: That is an EXCELLENT question. Soap is a surfactant because it forms water-soluble micelles that trap the otherwise insoluble dirt and oil particles.
SARAH: Why?
DAD: Why does soap form micelles?
SARAH: Yes.
DAD: Soap molecules are long chains with a polar, hydrophilic head and a non-polar, hydrophobic tail. Can you say ‘hydrophilic’?
SARAH: Aidrofawwic
DAD: And can you say ‘hydrophobic’?
SARAH: Aidrofawwic
DAD: Excellent! The word ‘hydrophobic’ means that it avoids water.
SARAH: Why?
DAD: Why does it mean that?
SARAH: Yes.
DAD: It’s Greek! ‘Hydro’ means water and ‘phobic’ means ‘fear of’. ‘Phobos’ is fear. So ‘hydrophobic’ means ‘afraid of water’.
SARAH: Like a monster?
DAD: You mean, like being afraid of a monster?
SARAH: Yes.
DAD: A scary monster, sure. If you were afraid of a monster, a Greek person would say you were gorgophobic.
(pause)
SARAH: (rolls her eyes) I thought we were talking about soap.
DAD: We are talking about soap.
(longish pause)
SARAH: Why?
DAD: Why do the molecules have a hydrophilic head and a hydrophobic tail?
SARAH: Yes.
DAD: Because the C-O bonds in the head are highly polar, and the C-H bonds in the tail are effectively non-polar.
SARAH: Why?
DAD: Because while carbon and hydrogen have almost the same electronegativity, oxygen is far more electronegative, thereby polarizing the C-O bonds.
SARAH: Why?
DAD: Why is oxygen more electronegative than carbon and hydrogen?
SARAH: Yes.
DAD: That’s complicated. There are different answers to that question, depending on whether you’re talking about the Pauling or Mulliken electronegativity scales. The Pauling scale is based on homo- versus heteronuclear bond strength differences, while the Mulliken scale is based on the atomic properties of electron affinity and ionization energy. But it really all comes down to effective nuclear charge. The valence electrons in an oxygen atom have a lower energy than those of a carbon atom, and electrons shared between them are held more tightly to the oxygen, because electrons in an oxygen atom experience a greater nuclear charge and therefore a stronger attraction to the atomic nucleus! Cool, huh?
(pause)
SARAH: I don’t get it.
DAD: That’s OK. Neither do most of my students.
