<u>Answer:</u>
The correct answer option is a) collisions between the particles and surrounding molecules.
<u>Explanation:</u>
The collisions between the particles and surrounding molecules causes the Brownian motion of particles in a colloid.
Brownian motion is the irregular movement of the microscopic particles in a fluid which bombard into each other.
It basically is the result of the molecules of a dispersion medium colliding with the dispersed particles of the phase.
Hydroelectric energy is produced.
It's like saying that if 1 meter is equal to 100 cm,
or
You can base the answers from the chart
Im pretty sure the answer is false
If an object has a positive charge, that means it has lost some electrons and now has more protons than electrons. So, i think the answer is d because the protons and neutrons attract and the balloon therefore moves closer