Answer:
The three main rock types are igneous, metamorphic and sedimentary. The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.
Answer:
the pig's average speed is 7 m/s
Answer:
a) : tin(IV) sulphite
b) potassium dichromate :
c) : iron (II) carbonate
d) copper(ll) nitrate: .
Explanation:
, , ad are ionic compounds because they are formed by transference of electrons between metals and non metals.The bond formed between a metal and a non-metal is always ionic in nature.
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
The nomenclature of ionic compounds is given by:
1. Positive is written first followed by the oxidation state of metal in roman numerals in square brackets.
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
Hence, the name of is tin(IV) sulphite, potassium dichromate is , is iron (II) carbonate and copper (II)nitrate is .
Magnesium has 2 valence electrons and 12 electrons.
Hope this helps