Water molecules (structure & properties)
According to Biology matriculation KPM syllabus
Science
13 plays
12 questions
Question 1
Multiple Choice
10 points
1. Water molecules are polar, with the ___
A.oxygen side being slightly positive and the hydrogen side being slightly negative.
oxygen side being slightly positive and the hydrogen side being slightly negative.
B.oxygen side being slightly negative and the hydrogen side being slightly positive
C.oxygen and hydrogen sides being slightly positive.
Question 2
Multiple Choice
10 points
The density of water is highest at 4ºC. What is the effect of this property of water?
A.Incorrect
Water provides cooling effect on animals.
B.Water can function as lubricant.
C.Water can function as an insulating layer.
Question 3
Multiple Choice
10 points
The oxygen atom in water is slightly ____.
A.negative
B.positive
Question 4
Multiple Choice
10 points
Hydrogen bonding occurs because of the ____ between the positive hydrogen and the negative oxygen
A.attraction
B.repulsion
Question 5
Multiple Choice
10 points
The attraction between water molecules is ___.
A.adhesion
B.cohesion
Question 6
Multiple Choice
10 points
The reason water sticks to your skin is ___.
A.adhesion
B.cohesion
Question 7
Multiple Choice
10 points
Water's high boiling point is due to ___.
A.hydrogen bonds
B.it's polarity
C.being nonpolar
Question 8
Multiple Choice
10 points
What two elements make up water?
A.Hydrogen and oxygen
B.oxygen and carbon
C.helium and carbon
Question 9
Multiple Choice
10 points
molecule in which opposite ends have opposite electric charges
A.cohesion
B.polar molecule
C.solution
Question 10
Multiple Choice
10 points
A high specific heat means
A.It heats up quickly with energy added
B.It requires more energy to change temperature
Question 11
Multiple Choice
10 points
The polarity of water allows it to ______________ other substances.
A.freezing/melting point
B.dissolve
C.polarity
Question 12
Multiple Choice
10 points
What formation does water molecules take when ice is formed?
A.lattice
B.random
C.crystalline