Return of the Chemistry Game before trials! (1 Viewer)

[The_highwayman]

Dammit. We have another 'E'

What to write...what to write...

ENZYMES: Protein molecules that act as Biological Catalysts. They are present in all living organisms

 

[Emma-Jayde]

structural isomers: two substances having the same molecular formula but different physical and chemical properties because the arrangement of their component atoms is different.

 

[The_highwayman]

SALINATION: the process where salt accumulates in the soil making it useless for agriculture

 

[Leah.Midd]

Nonpolar Bond :Covalent bond in which electron density is evenly distributed

 

[The_highwayman]

DENSITY: Mass per unit volume of a substance

 

[Dreamerish*~]

Technitium-99m: A radioisotope which emits gamma rays and has a half-life of 6 hours. It is made from molybdenum-99 at the hospital that it will be used due to its short half-life. Molybdenum-99 has a half-life of 67 hours.

 

[Emma-Jayde]

Mole: the number of atoms contained in exactly 12 grams of carbon-12 (Avogadro's number). 1 mol = 6.022 x 10²³ atoms, molecules, or ions

 

[The_highwayman]

EQUIVALENCE POINT: the point in a titration when just enough base is added to neutralise the acid or when the reaction is complete

 

[Jumbo Cactuar]

toluene : Methyl benzene. Clear solvent. Methyl group makes toluene much more reactive than benzene. Undergoes nitration to make trinitrotoluene! Don't try that at home kids!!!

 

[2005]

exhaust emissions - eg. include: hydrocarbons, oxides of nitrogen and carbon monoxide...

 

[Dreamerish*~]

exhaust emissions - eg. include: hydrocarbons, oxides of nitrogen and carbon monoxide...

Spectrophotometer, U.V.: A device which is placed on the ground, facing up. A beam of light which has a wavelength that is known to be absorbed by ozone is absorbed. On either side of this light, a beam of light which has a wavelength that is known not to be absorbed by ozone is absorbed. By comparison of the two intensities, the concentration of ozone is calculated, and given in DU (Dobson Units). The ozone hole was first detected by this device.

 

[Jumbo Cactuar]

^^ Doesn't necessitate being used for ozone levels. I am certainly glad the last one I used wasn't as you describe it!

 

[Jumbo Cactuar]

Volatile Liquid : A liquid with a relatively low B.P., such that the substance vapourises with a significant partial pressure within the range of 'room temperatures'.

 

[rnitya_25]

Dehydrate: the chemical process of removing water or hydrogen and oxygen atoms in the ratio of 2:1 from a substance.

 

[Jumbo Cactuar]

Electrode Potential : The amount of electric potential difference through a half cell reaction.