Matter, Temperature and Pressure Review

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is temperature?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.

Front

What is pressure?

Back

Pressure is the force exerted per unit area on the surface of an object.

Front

What happens to the molecules of a gas when the temperature increases?

Back

The molecules move faster and collide more frequently.

Front

What is the relationship between temperature and pressure when volume is constant?

Back

The relationship is direct; as temperature increases, pressure increases.

Front

What is the kinetic molecular theory?

Back

The kinetic molecular theory states that matter is made up of small particles that are in constant motion.

Front

What is the effect of decreasing temperature on gas pressure?

Back

As temperature decreases, the pressure of the gas also decreases if the volume is constant.

Front

What is Brownian motion?

Back

Brownian motion is the random movement of particles suspended in a fluid, resulting from collisions with fast-moving molecules.

Front

What happens to the volume of a gas when its pressure increases at constant temperature?

Back

The volume of the gas decreases.

Front

What is absolute zero?

Back

Absolute zero is the theoretical temperature at which all molecular motion stops, equivalent to -273.15°C or 0 K.