1. attraction between molecules at the surface of a liquid column adhesion 2 . the energy of motion capillary action 3 . the movement of liquids through the spaces of materials cohesion 4 . the overall movement of suspended or dissolved particles resulting from the random movements of individual particles diffusion 5 . attraction of one particle in a material for another kinetic energy 6 . the attraction between unlike substances surface tension 7 . a measure of the resistance of a liquid to flow viscosity

1) The attraction between molecules at the surface of a liquid column

>Surface tension

Surface tension is a phenomenon observed at the surface film of a liquid  which is usually caused by the attraction of the particles on the surface layer by the bulk moiety of the liquid, and which tends to minimize its surface area.

2) The energy of motion 

> Kinetic energy

Kinetic energy is the energy which is possessed by an object due to motion.

3) The movement of liquids through the spaces of materials

> Capillary action

Capillary action is defined as the ability of any liquid to flow through the narrow spaces without any of the assistance, or even in opposition to, external force like gravitational force.

4) The overall movement of suspended or dissolved particles resulting from the random movements of individual particles 

> Diffusion

Diffusion in liquids can be defined as the random movement of particles which are dissolved or are in suspended state in liquid.

5) Attraction of one particle in a material for another 

> Cohesion

Cohesion is defined as the attraction between two different particles in a state of matter

6) The attraction between unlike substances 

> Adhesion

Adhesion is a property  of attraction between two unlike substances.

7) A measure oof the resistance of a liquid to flow  

> Viscosity

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

the correct answer is:

a. formation of precipitation