Essays Tagged: "melting and boiling points"

Xenon

e 2 in the 1st shell, 8 in the 2nd, 18 in the 3rd, 18 in the 4th and lastly 8 in the 5th shell. The melting and boiling points of xenon are extremely low. They are -111°C and -107°C respective ...

(2 pages) 67 0 3.6 Dec/1997

Subjects: Science Essays > Chemistry

The properties and biological importance's of water to living organisms

s (water vapor). Water molecules bond to each other by means of hydrogen bonds, and this raises its melting and boiling points substantially. If these bonds did not exist, its boiling point would be ... ecules. These weak bonds are called hydrogen bonds. This is the reason behind the unexpectedly high melting and boiling points of water, when compared to similar compounds such as H2S (hydrogen sulphi ...

(6 pages) 50 0 4.6 Feb/2004

Subjects: Science Essays > Biology

Describe The Roles of Water in Living Organisms

; sweat is mostly made up of water. The structure of the water molecule means that it has very high melting and boiling points for a molecule of its nature because of the strong attraction between the ...

(4 pages) 33 0 3.0 Mar/2004

Subjects: Science Essays > Biology

Aluminum and its properties.

lectropositive than transition metals, but less than alkali metals and alkaline earth metals. Their melting and boiling points are generally lower than those of the transition metals, and they are als ... ght weight. Its low density makes is about 1/3 the weight that of steel. In the liquid phase at its melting point of 660 C or 1220.58 F, aluminum has the density of 2.375 g per cubic centimeter. The ...

(3 pages) 39 0 3.4 Dec/2005

Subjects: Science Essays > Chemistry

The Importance of Water in Living Organisms

l three of its states. However its molecules are bonded together by hydrogen bonds, this raises its melting and boiling points, i.e. its boiling point would be -120ºC rather than 100ºC. Also ...

(3 pages) 13 0 2.3 Jun/2006

Subjects: Science Essays > Biology

The Importance of Water in Living Organisms

l three of its states. However its molecules are bonded together by hydrogen bonds, this raises its melting and boiling points, i.e. its boiling point would be -120ºC rather than 100ºC. Also ...

(3 pages) 18 0 4.6 Jul/2006

Subjects: Science Essays > Biology

Formal Lab Report Rates of Reaction Alkali Metals and Alkaline Earth Metals

in the first column of the periodic table and they may be readily fused and volatilized with their melting and boiling points becoming lower with increasing atomic mass. They are the strongest electr ... ; (Tutor Vista. 2008) Also, these elements are less reactive than the Alkali metals and have higher melting points and boiling points.“The ionization energy is the amount of energy it takes to de ...

(7 pages) 6 0 0.0 Jan/2010

Subjects: Science Essays > Chemistry