This chapter is about molecules. We must understand molecules because that is largely what we are made of. Nuclear radiations harm us by damaging our molecules. Copyright information © 1991 John Jagger About this chapter Cite this chapter Jagger, J. (1991). Molecules: How the Atoms Fit To...
Bohr models of various atoms. The major advantage of the Bohr model was that it worked. It explained several things: Atomic spectra - discussed above Periodic behavior of elements - elements with similar properties had similar atomic spectra. Each electron orbit of the same size or energy (shell...
Do you have a school model? If the answer is yes, what is it? And what does it mean? If the answer is no. Do you think it's necessary for school to have a model wire? Integrate. Who can't be all work together in a way that makes something more effective. Enable. To make it...
Appearances change with age and sometimes a familiar face no longer excites us the way it used to. But partners that grow spiritually together don’t face these challenges. Instead, they nurture and cement their relationship. So what do I mean when I talk about a spiritual connection? What I...
How can scientists search for strange matter if no one's ever seen it? Well, they actually do know what bits of strange matter would look like on Earth if it weren't dangerous. It would resemble our regular atoms -- a positively charged core made of quarks, with electrons around -- on...
Atoms don't have brains, so it's strange to think of one atom getting tricked by another. And yet that's exactly what scientists at the University of British Columbia in Vancouver accomplished. This bit of chemical deceit involved hydrogen and helium atoms, elements one and two on the perio...
and how those different materials stick together and separate at just the right time are very important considerations. Ultimately, all the materials used in a particular bullet cartridge depend on the job it's been designed to do. In other words, cartridges with different purposes are often very...
astayhungry stay foolish stayhungry 逗留愚蠢[translate] aPut your name on the cigar, smoke into the lungs, keep your distance from my heart, and you will no longer have to worry about broken links, never to be together. 投入您的名字在雪茄,抽烟入肺,保留您的从我的心脏的距离,并且您不再必...
When you bend the plastic stick, the glass vial snaps open, and the two solutions flow together. The chemicals immediately react to one another, and the atoms begin emitting light. The particular dye used in the chemical solution gives the light a distinct color. Depending on which compounds ...
teacher ended the activity by saying: ‘You are now going to work together with a friend, and you will get a box like this (showing the box with balls and sticks). What do you think you are going to build?’ As a response several of the pupils yelled: ‘Water molecules!’ The ...