An is the into which an element can be divided and still be the same substance.

Answer : An atom is the smallest particle into which an element can be divided and still be the same substance.

Explanation :

Atom : It is the smallest unit of an element. Every atom is composed of a nucleus.

There are three sub-atomic particles present in every atom which are electrons, protons and neutrons.

The nucleus of an atom consist of protons and neutrons.

The electrons are revolve around the nucleus and are bound to the nucleus.

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.

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!