The process by which rocks break down as a result of chemical reactions is called chemical weathering. Weathering is the breaking down of rocks, and chemical indicates that the chemical reactions cause the breaking-down. I hope this helps and feel free to rate my answer Brainliest!
The oxidation of sulfur in H2SO4 is +6.
The Alkali Metals- (Group 1A)can be found (excluding hydrogen) in the first column of the periodic table. They all have 1 valence electron and tend to form +1 cations when forming Ionic bonds with non metals.
The Alkali Earth Metals: (Group 2A) can be found in the second column/group on the periodic table. These elements form +2 positively charged cations when forming Ionic bonds with non metals. They also all have 2 valence electrons.
The Halogens: are the elements that make up the second to last group on the periodic table. These elements include Chlorine, Fluorine, Bromine, Iodine, and Astatine. These elements have 7 valence electrons. The usually form a -1 charged anion when forming ionic bonds with metals.
The Noble gases: the very last group on the periodic table. All these elements have 8 valance electrons. Due to the octet rule these atoms are already very stable and rarely react with other elements.
OILRIG:
Oxidation is loss (of electrons)
Reduction is gain (of electrons)
so...
The first one is an oxidation half-equation as the Sn loses electrons;
The second one is a reduction half-equation as the Cl₂ gains electrons
Answer:
The SI system : The international system of units.
It is a scientific method of expressing the magnitudes or quantities of important natural phenomena.
<u>Benefits</u><u> </u><u>of </u><u>SI </u><u>system</u>
- It is a coherent system of units ( a system based on certain sets of fundamental units )
- It is a rational system of units ( it assigns only one unit to a particular physical quantity )