Particulate nature of matter

Front

What is the particulate nature of matter?

Back

The particulate nature of matter states that all matter is made up of tiny particles (atoms, molecules, or ions) that are in constant motion.

Front

What is diffusion?

Back

Diffusion is the process by which particles spread from an area of high concentration to an area of low concentration.

Front

What is the relationship between molecular mass and speed of molecules?

Back

Molecules with a smaller molecular mass (Mr) move faster than those with a larger molecular mass.

Front

What happens to gas molecules when they diffuse into the air?

Back

Gas molecules spread further into the air, mixing with the surrounding air molecules.

Front

What is evaporation?

Back

Evaporation is the process where liquid molecules gain enough energy to change into gas.

Front

What is the difference between evaporation and boiling?

Back

Evaporation occurs at any temperature and only at the surface of the liquid, while boiling occurs at a specific temperature throughout the liquid.

Front

What is the effect of temperature on the rate of diffusion?

Back

Higher temperatures increase the kinetic energy of particles, leading to faster diffusion.

Front

What is the process of dissolving?

Back

Dissolving is the process where solute particles are surrounded by solvent particles, leading to a homogeneous mixture.

Front

What is the significance of surface area in the rate of dissolving?

Back

A larger surface area allows for more solute particles to interact with solvent particles, speeding up the dissolving process.

Front

What is the term for the change of state from liquid to gas?

Back

The term is 'vaporization' or 'evaporation'.