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66Energy Sub levels (Subshells) and Oribtals
The principal energy levels contain sublevels designated by the letters s, p, d, f. Just as successive shells have higher energy, successive subshells also have higher energy. The region of space where there is a significant probability of finding a...
24 comments64Rules of Naming Oxyanions
1. The name has a root taken from the name of the central atom ( for example, carbonate, CO3 -2 , and nitrate, NO3 -). 2. The names of the ions usually end in -ite or -ate. The -ite ending idicated the anion with the smaller number of oxygens....
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71Heterogeneous and Homogeneous Mixtures
Heterogeneous Mixture These mixtures are made up of more than one phase or of different parts and can be separated physically. The different components are visibly distinguishable from one another. A chocolate chip cookie, a piece of quartz...
157 comments69Physical and Chemical Properties of Matter
Properties are the distinguishing characteristics that we use to identify samples of matter. We can recognize our own house among the other houses on the same street by characteristics, such as paint, make, and design. In the same way. we can...
55 comments63The Rutherford's Gold Foil experiment
The Rutherford's Gold Foil experiment Ernest Rutherford, a New Zealander, designed an experiment to study how alpha particles, with a 2+ charge, interact with a piece of very thin gold foil. Rutherford bombarded a very thin peice of gold foil with...
65 comments61Metallic Bonding
This type of binding is used to describe metals in their uncharged element states ( as possoed to the ionic bonding we see so frequently when these metals become ions). Each metal atom is considered to be...
0 comments60The Subatomic Particles
Electron The electron has a mass of 9.110 X 10 – exponent 28. This mass is 1/1 837 the mass of a hydrogen atom, corresponding to 5.486 X 10 – exponent of 4 atomic mass unit...
0 comments62Intermolecular Forces of Attraction and Properties of Molecules
Molar mass usually indicates the size of the molecule. The heavier the molecules, the greater the London forces and the more likely weare to find it in the liquid or solid state at a given temperature. For example, at room temperature, Natural gas,...
1 comment44Electron Affinity
Electron affinity is the amount of energy released or absorbed when an electron is added to an atom to from a negative ion. For most of the elements, energy is released when an atom adds an electron. Atom +...
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49Stretching
If you're a veteran to the workout scene then you probably make a point of stretching before and after your workouts especially if you've ever been left with painfully stiff muscles the next day. I learned my...
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