Answer:
Burning wood is a chemical change. Burning wood is an example of a chemical reaction in which wood in the presence of heat and oxygen is transformed into carbon dioxide, water vapour, and ash.
Baking an apple pie is a physical change because the apples in the pie start changing physically and the pie crust starts hardening and rising up.
Explanation:
Answer:
<u>Question</u><u> </u><u>1</u><u>:</u>
<em>Answer</em><em>:</em><em> </em>M: (17 - 35) & (17 - 37), N:(8 - 18) (8 - 16) & (8 - 17)
• Isotopes are atoms of the same element with same atomic number but different mass numbers.
<u>Question</u><u> </u><u>2</u><u>:</u>
<em>Answer</em><em>:</em><em> </em>Element M has high nuclear charge than element N
• Nuclear charge depends on atomic number or proton number.
Answer : The molecular geometry of is trigonal pyramidal.
Explanation :
Formula used :
where,
V = number of valence electrons present in central atom
N = number of monovalent atoms bonded to central atom
C = charge of cation
A = charge of anion
The given molecule is,
Number of bond pair = 3
Number of lone pair = 1
The total number of electron pair are 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.
But as there are 3 atoms around the central oxygen atom, the fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be trigonal pyramidal.
Hence, the molecular geometry of is trigonal pyramidal.
Answer:
A) long distance and long travel time.
Explanation:
Sedimentary rocks are the rocks which are created by the accumulation or the deposition of minute particles as well as subsequent cementation of the mineral or the organic particles on floor of the bodies of the water at the surface of the Earth.
Sediment Maturity is the duration of the time that sediments have been in sedimentary cycle. <u>Texturally, mature sediments are that which are well rounded, (the process of rounding for the sediments increases with the transport distance as well as the time) as well as well sorted (the process of sorting for the sediments gets better as the larger clasts are astray and the smaller clasts are carried away , which also means the sediments travel longer distance).</u>
The number of molecules decreases.