Barrons SAT Subject Test Chemistry, 13th Edition

TIP Know how this trend relates to the chart below. Can you explain the peaks? TIP Know the reason for the peaks and valleys. NU ...

Pierre Curie used tons of it to isolate very small quantities of two new elements, radium and polonium, both radioactive. Along ...

Ejection reduces the atomic number by 2, the atomic weight by 4 amu. High energy, relative velocity Range: about 5 cm in air. S ...

All methods of detection of these radiations rely on their ability to ionize. Three methods are in common use. Photographic pla ...

atomic number is shown by a subscript ( 92 U), and the isotopic mass by a superscript (^238 U). The alpha particle is represente ...

RADIOACTIVE DATING A helpful application of radioactive decay is in the determination of the ages of substances such as rocks an ...

in hydrogen bombs. Scientists are still trying to harness this reaction for domestic uses. The following examples show basically ...

half-life Hund’s Rule inert atoms ionic radii ionization energy isotopes Lewis structure Mendeleev metalloids Moseley neutron nu ...

This is an interactive online periodic table available on the Web. http://www.ptable.com/ This site shows properties, orbitals, ...

The mass number of this atom is (A) 13 (B) 9 (C) 8 (D) 5 7. The number of orbitals in the second principal energy level, n = 2, ...

(B) isotopes (C) neutrons (D) protons The use of radioactive isotopes has produced promising results in the treatment of certa ...

Which element has the lowest electronegativity of this group? Which element has an outer orbital configuration of 2s^2 2 p^2 ...

Bonding 3 These are the skills that are usually tested on the SAT Subject Test in Chemistry. You should be able to... Define ion ...

Noble Gas Electron Distribution Electrons in Valence Energy Level Helium 1 s^2 2 Neon 1 s^2 2 s^2 2 p^6 8 Argon 1 s^2 2 s^2 2 p^ ...

positively charged and is called a cation. They are now referred to as ions, and the bond or attraction between them is called a ...

These covalent bonded molecules do not have electrostatic charges like those of ionic bonded substances. In general, covalent co ...

Figure 12. Polar Covalent Bonds in Nonpolar Molecules In all the examples in Figure 12 the bonds are polar covalent bonds, but t ...

TIP Metallic bonds are like positive ions in a “sea” of electrons. Metallic Bonds In most metals, one or more of the valence ele ...

bonding, metals usually have high melting points, show great strength, and are good conductors of electricity. INTERMOLECULAR FO ...

bound mainly by this type of attraction have rather soft crystals, are easily deformed, and vaporize easily. Because of the low ...