Los sólidos, los líquidos y los gases

The video explores Brownian motion, discovered by observing pollen grains in water, and later explained by Einstein as the result of collisions with water molecules. This leads to the kinetic theory of matter, which describes how particles in solids, liquids, and gases behave. Solids have tightly bound particles with strong attraction, maintaining shape and volume. Liquids have more freedom of movement, allowing flow, while gases have dispersed particles with weak attraction, filling containers and being compressible. Brownian motion reveals the hidden world of matter in continuous motion.

Who was the scientist that explained the cause of Brownian motion?

• Marie Curie

• Niels Bohr

• Albert Einstein

• Isaac Newton

What does the kinetic theory of matter suggest about particles?

• They only move when heated.

• They are in continuous motion and have attractive forces between them.

• They are stationary and do not move.

• They repel each other and never attract.

In which state of matter are particles tightly bound and follow a regular pattern?

• Gas

• Liquid

• Solid

• Plasma

Why can gases be compressed into a smaller volume?

• Because they are heavier than liquids.

• Because they have strong attractive forces.

• Because they have large empty spaces between particles.

• Because they have a fixed shape.

What property of liquids allows them to flow?

• Their particles are electrically charged.

• Their particles are very far apart.

• Their particles slide over each other.

• Their particles are fixed in place.