The Particle Theory of Matter The Particle Theory

The Particle Theory of Matter

The Particle Theory • Summarizes what scientists know about particles that make up matter…

Particle Theory of Matter 1. All matter is made of tiny particles that have empty spaces around them.

The Particle Theory Particles in a Gas • Very far apart; big spaces between particles • Move very quickly; move in any direction • Have no definite shape or volume; fill up the container they are in • Weak attraction between particles

The Particle Theory Particles in a Liquid • Particles are closer together; move more slowly • Particles in a liquid are loosely bonded so they slide over each other • Liquids have a definite volume, but not shape

The Particle Theory Particles in a Solid • Particles are very close and tightly packed together; particles do not move around • Particles in a solid are attracted to each other; strong bonds • Solids have a definite shape and volume

Particle Theory of Matter 2. Different substances are made up of different types of particles.

Particle Theory of Matter 3. Particles are always in constant random motion.

The Particle Theory Gas Liquid Solid

Particle Theory of Matter 4. Particles move faster as temperature increases. When heated, particles gain energy.

Particle Theory of Matter 5. The particles in a substance attract each other. The amount of attraction is different for different substances GASES: Weak LIQUIDS: Strong SOLIDS: Very Strong

Solids • Particles of solids are closely packed in an orderly manner • Vibrate about their fixed positions

Liquids • Particles of a liquid are closely packed in a disorderly pattern • The particles move past one another

Gases • Particles of a gas are spread far apart from one another • The attraction between the particles is weak

The Particle Theory The temperature of a liquid, solid or a gas refers to how fast its particles are moving. The faster the particles move, the higher the temperature. The higher the temperature the more energy the particles have High Temperature Medium Temperature Low Temperature

Chemistry…a volatile history • http: //vimeo. com/23948902