Explanation

The rate of evaporation can be increased by:

• Decreasing atmospheric pressure
• Increasing temperature
• Decreasing humidity
• Increasing the surface area of the liquid

Explanation

The law of conservation of momentum states that the total momentum of a closed system (such as a system of two bodies) remains constant over time, as long as there are no external forces acting on the system.

This means that the total momentum before a collision is equal to the total momentum after the collision.

Explanation

Power is calculated as the rate of work done or energy transferred:

Power = Work / Time

= 20 J / 10 s

= 2 W

So, the machine's power output is 2 watts.

Explanation

Inhibitors are molecules that decrease the activity of enzymes, often by binding to a specific site on the enzyme.

Activators are molecules that increase the activity of enzymes, often by binding to a specific site on the enzyme.

Explanation

Linear thermal expansion of a solid depends on:

• Increase in temperature
• Original length
• Properties of the material

Explanation

Evaporation occurs when molecules on a liquid's surface gain enough energy to escape into the air, and this can happen at any temperature, not just at boiling point.

It's a slow process at lower temperatures, but faster at higher temperatures.

Explanation

Latent heat of vaporization is the energy required to change a liquid into a gas (or vice versa) without changing its temperature.

Latent heat of fusion is the energy required to change a solid into a liquid (or vice versa) without changing its temperature.

Explanation

Latent heat of fusion is the energy required to change a solid into a liquid (or vice versa) without changing its temperature. 

Latent heat of vaporization is the energy required to change a liquid into a gas (or vice versa) without changing its temperature.

Explanation

The boiling point is the temperature at which a pure liquid changes state from liquid to gas at standard atmospheric pressure.

Key Points:

• The melting point is the temperature at which a solid changes state to a liquid.
• The freezing point is the temperature at which a liquid changes state to a solid.

Explanation

Specific heat capacity is the thermal energy transfer required per unit mass to increase the temperature of a substance by 1°C (or 1 K).

It is a measure of how much heat energy a substance can absorb or release per unit mass per unit temperature change.