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- Sedimentary rock (7917 bytes)
8: .... Sedimentary rocks can contain fossils because, unlike most igneous and metamorphic rocks, they form ...
10: ...ent only a thin veneer over a crust consisting mainly of igneous and metamorphic rocks.
28: ...ocks are commonly attacked by water, particularly acid or alkaline solutions, and all of the common igne... - Virus (17572 bytes)
1: ...a host cell, viruses consist of genomic [[nucleic acid]], either [[DNA]] or [[RNA]] (depicted as blue), ...
3: ...tein]]s. Importantly, viral [[genome]]s code not only for the [[protein]]s needed to package its [[gen...
26: ...d do not generally bind as tightly to the nucleic acid as helical capsid proteins do. These structures ...
32: ...]], the protein coat that surrounds the [[nucleic acid]], determines the exact replication process. Some...
40: #Injection: The nucleic acid of the virus moves through the plasma membrane an... - Vitamin (5982 bytes)
1: ...], [[essential fatty acid]]s or [[essential amino acid]]s. Nor is it used for the large number of other ...
43: |[[Pantothenic acid]]
58: |[[Folic acid]]
68: |[[Ascorbic acid]]
110: ...ondition, while Vitamin B<sub>1</sub> stores may only last a couple of weeks. - Guinea pig (19730 bytes)
43: Unlike many rodents such as [[mouse|mice]], [[rat|rat...
60: ...r third week after birth. Females can breed when only three weeks old. [[Litter#Other_meanings_of_litt...
77: ...e badly, if not fatally, injured by a rabbit suddenly kicking out with its paws or an overly romantic ...
85: ...s will develop irritations on their lips from the acid.
89: Cavies also need unlimited [[Timothy-grass|timothy]] [[hay]]. However,... - Antimony (9093 bytes)
48: ...Oxidation state]]s ([[Oxide]]) || ?3, 5 (mildly [[acid]]ic)
131: ... It is also attacked by [[oxidation|oxidizing]] [[acid]]s and [[halogen]]s. Antimony and some of its all...
162: ...st been reported in some acidic fruit drinks. The acidic nature of the drink is sufficient to dissolve s...
165: *[http://periodic.lanl.gov/elements/51.html Los Alamos National Laborato... - Arsenic (12497 bytes)
47: ...ion state]]s ([[Oxide]]) || '''+-3''',5 (mildly [[acid]]ic)
152: ...kemia]] that is resistant to [[all-trans retinoic acid|ATRA]].{{an|ArsTriChemo}}
156: ... more expensive) than those made in [[silicon]]. Unlike silicon it is [[direct bandgap]], and so can b...
201: * [http://periodic.lanl.gov/elements/33.html Los Alamos National Laborato... - Barium (8466 bytes)
163: ...several millisecond to several minute range. The only notable exception is barium-133 which has a half...
166: All water or acid [[soluble]] barium compounds are extremely [[pois...
167: ...ude air. Barium sulfate can be used in medicine only because it does not dissolve, and is eliminated ... - Berkelium (5697 bytes)
81: ...d be [[solubility | soluble]] in dilute [[mineral acid]]s.
88: ...] by [[Glenn T. Seaborg]], [[Albert Ghiorso]], Stanley G. Thompson, and Kenneth Street, Jr at the [[Un...
94: *[http://periodic.lanl.gov/elements/97.html Los Alamos National Laborato... - Beryllium (15119 bytes)
141: ...netic and resists attack by concentrated [[nitric acid]]. It is highly permeable to [[X-ray]]s, and [[ne...
146: ...iagnostics to filter out visible light and allow only X-rays to be detected.
167: Of beryllium's 10 [[isotope]]s, only beryllium-9 is stable. [[Cosmogenic]] beryllium-...
186: ...not have any symptoms. The general population is unlikely to develop acute or chronic beryllium diseas...
205: *[http://periodic.lanl.gov/elements/4.html Los Alamos National Laborator... - Bismuth (9188 bytes)
54: | '''3''', 5 (mildly [[acid]]ic)
149: ...stry)|heavy metal]]s, it is the heaviest and the only non-toxic. No other metal is more [[diamagnetic]...
188: *[http://periodic.lanl.gov/elements/83.html Los Alamos National Laborato... - Boron (9084 bytes)
20: {{Elementbox_oxistates | 3<br />(mildly [[acid]]ic oxide) }}
47: ...al]]. Compounds of boron often behave as [[Lewis acid]]s, readily bonding with electron-rich substances...
59: * [[Boric acid]] is an important compound used in [[textile]] pr...
76: ..., [[kernite]], [[ulexite]] and [[borate]]s. Boric acid is sometimes found in [[volcano|volcanic]] spring...
94: *[http://periodic.lanl.gov/elements/5.html Los Alamos National Laborator... - Bromine (8073 bytes)
51: | ?1,5 (strong [[acid]])
143: ...aliphatic alcohols (such as methanol), and acetic acid. It [[chemical bond|bonds]] easily with many elem...
145: ... [[aromatic]] [[hydrocarbon]]s, [[ketone]]s and [[acid]]s (these are brominated by either addition or su...
178: *[http://periodic.lanl.gov/elements/35.html Los Alamos National Laborato... - Carbon (15360 bytes)
15: ...d contains a high proportion of closed porosity. Unlike normal graphite, the graphitic layers are not ...
19: ...any fruits. The [[isotope]] [[carbon-14]] is commonly used in [[radioactive dating]].
51: ... beta form, when synthetically-produced graphite only contains the alpha form. The alpha form can be c...
53: ...ntly separated by other atoms, are held together only by [[van der Waals force]]s, so easily slip past...
87: ... [[United States]]; [[Russia]]; [[Mexico]]; [[Greenland]] and [[India]]. - Chlorine (10751 bytes)
18: ...ates | ±'''1''', 3, 5, 7 <br />(strongly [[acid]]ic oxide) }}
44: ...] dissolves 3.10 liters of chlorine and at 30 ?C only 1.77 liters.
50: *Used (in the form of [[hypochlorous acid]]) to kill [[bacterium|bacteria]] and other micro...
58: ... [[1774]] by [[Carl Wilhelm Scheele]], who mistakenly thought it contained [[oxygen]]. Chlorine was gi...
61: In nature chlorine is found only as the [[chloride ion]]. Chlorides make up much... - Chromium (13677 bytes)
36: ...]]) </td><td>6,'''3''',2 (strong acid)</td></tr>
117: ** as an [[alloy]] constituent, e.g. in [[stainless steel]],
136: ...b>3</sub>) by mixing crocoite with [[hydrochloric acid]]. In 1798, Vauquelin discovered that he could is...
143: ... potency of insulin in regulating sugar balance. Unlike other essential trace metals, chromium has not...
157: ...of chromic acid, is sold industrially as "chromic acid". - Dysprosium (8843 bytes)
160: ...lving readily in dilute or concentrated [[mineral acid]]s with the emission of [[hydrogen]]. It is soft ...
201: *[http://periodic.lanl.gov/elements/66.html Los Alamos National Laborato... - Fluorine (8588 bytes)
18: ...{Elementbox_oxistates | −1<br />(strongly [[acid]]ic oxide) }}
37: ... water to form the equally dangerous hydrofluoric acid.
39: In aqueous solution, fluorine commonly occurs as the fluoride ion F<sup>-</sup>.
47: * [[Hydrofluoric acid]] (chemical formula [[hydrogen|H]]F) is used to e...
60: ...m fluoride (fluorspar) with concentrated sulfuric acid. - Gadolinium (9860 bytes)
161: ...reacts slowly with water and is soluble in dilute acid.
165: ...gnetic]] at room temperature, and is in fact the only metal to exhibit [[ferromagnetic]] properties ex...
175: ...a]] in [[1886]]. The element itself was isolated only recently for the first time.
177: ...ke the mineral [[gadolinite]], is named after [[Finland|Finnish]] chemist and [[geologist]] [[Johan Ga...
212: *[http://periodic.lanl.gov/elements/64.html Los Alamos National Laborato... - Gallium (9500 bytes)
140: ...e of the largest liquid ranges for a metal, and (unlike mercury) for having a low [[vapor pressure]] a...
142: ...gh-purity gallium is attacked slowly by [[mineral acid]]s.
143: ...e than in the crystalline state (like water, but unlike most materials).
145: ...in the conventional [[unit cell]]. Each atom has only one nearest neighbor (at a distance of 244 [[pic...
147: ... [[gallium arsenide]] is a [[semiconductor]] commonly used in [[light-emitting diode]]s). - Gold (24329 bytes)
156: ...ted and blue light to be absorbed. It is one of only three metals which have an actual easily-identif...
173: *[[Chlorauric acid]] is used in [[photography]] for toning the silve...
241: ...e (Au[[chlorine|Cl]]<sub>3</sub>) and chlorauric acid ([[hydrogen|H]]AuCl<sub>4</sub>) are the most com...
243: ...y compounds ([[auric chloride]] and [[chloroauric acid]] are the most common). It also forms:
250: There is only one stable [[isotope]] of gold, and 18 [[radiois...
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