Chapter 1

hot saturated solution

When a(n) ________ is cooled down, less solid can be dissolved.

definite temperature

Boiling occurs at a(n) ________ called the boiling point and all the particles in the liquid may escape.

Sublimation

________ is when substances change directly from a solid to gas without going through the liquid state.

Solution

________ is the liquid formed from dissolving a solute in the solvent.

Solvent

________ is a liquid that dissolves a solute.

aqueous solution

Dissolving of potassium permanganate occurs, forming a(n) ________ KMnO4.

Diffusion

________ is slower in liquids and gases because liquid particles move much slower than gas particles and because liquid particles are much closer so there is less space for them to move without colliding with another one.

Solute

________ is a substance that is dissolved in a solvent.

Particles

________ have kinetic energy and are in constant and random motion.

solid solute

A(n) ________ can be transferred into a beaker of solvent by using a spatula.

tiny particles

A substance is made of very ________.

new attraction

The solubility of a solute in a solvent depends on whether the ________ forces are strong enough to overcome the old ones.

Sublimation

________ occurs when particles of a solid vibrate fast enough to overcome the attraction forces between them and become widely separated and able to move freely and quickly.

Diffusion

________ is the spreading out of particles in a fluid from a region with higher concentration to a region of lower concentration.

Particles

________ with higher speed of movement have more kinetic energy.

Diffusion

________ is faster at higher temperatures.

Particles

________ have potential energy which becomes higher when their attraction forces are weakened.

There are three types of particles

atoms, molecules and ions