RI (c)
Figure 2 shows the chemicals given to a student.
Figure 2
NORT
IGI
Dilute
sulfuric
acid
Four different powdered metals
agos
ON
w
z
х
Y
RATED ST
MICRONI
BRAZ
The student wants to investigate the reactivity of the four metals.
LU
Outline a plan the student could use to investigate the relative reactivity of the four
metals, W, X, Y and Z.
The plan should use the fact that all four metals react exothermically with dilute
sulfuric acid
You should name the apparatus used and comment on the safe use of the
chemicals. You can number your points or bullet point below.
(6)

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

50.23 i believe is correct but don't quote me on that.