Question

Explain all answers please

PART A: Which is a sigma bond?

(A) Side by side overlap of the d orbitals (B) End to end overlap of p orbitals (C) S orbital overlapping with the side of a p orbital (D) Overlap of two d orbitals (E) P orbital overlapping with an f orbital

PART B: Which is a pi bond?

(A) Side by side overlap of p orbitals (B) End to end overlap of p orbitals (C) S orbital overlapping with the end of d orbital (D) Overlap of two d orbitals (E) P orbital overlapping with an f orbital

PART C: A physical change:

(A) Occurs when iron rusts (B) Occurs when sugar is heated into caramel (C) Occurs when glucose is converted into energy within your cells (D) Occurs when propane is burned for heat (E) Occurs when water is evaporated

PART D: A chemical change:

(A) Occurs when paper is shredded (B) Occurs when methane gas is burned (C) Occurs when water is vaporized (D) Occurs when salt is dissolved in water (E) Occurs when powdered lemonade is stirred into water

Answer 1

part A: (B) End to end overlap of p orbitals

part B:   (A) Side by side overlap of p orbitals

part C:    (E) Occurs when water is evaporated

part D: (B) Occurs when methane gas is burned

sigma bond is always formed with end on overlap of two p orbitals .

pi bond formed by side ways overlap always

physical change means the change which does not causes any change in composition of substance during evaporation of water it will not change in its composition.

chemical change is the chenge by which composition of substance will change.