Question

When temperature drops, (for example from 20 degrees celsius to 10 degrees celsius)

a.) energy increases

b.) particles move slower

c.) particles collide more often

d.) pressure increases

Answer 1

When the temperature drops from 20 degrees Celsius to 10 degrees Celsius, the average kinetic energy of particles decreases, causing the particles to move slower.

Step-by-step explanation:

When the temperature drops, such as from 20 degrees Celsius to 10 degrees Celsius, several things happen at the molecular level:

• Energy in the form of average kinetic energy decreases, leading to a reduction in the speed at which particles move. This is because temperature is directly proportional to the kinetic energy of the particles.
• As the particles move slower, they collide less often, and with less energy, leading to a decrease in pressure if the volume is constant (according to the ideal gas law).
• The decrease in temperature also means that the gas inside a balloon, for example, would become colder due to the lowered kinetic energy.

Therefore, the correct answer to the question is:

b.) particles move slower

Answer 2

In the Celsius scale each degree is one part of 100 degrees. This is because in this scale the difference between boiling and freezing temperatures of water is 100 ° - 0 ° = 100 °, so one degree Celsius is one part of 100.

In the Farhenheit scale, each degree is one part of 180 degrees. This is because in this scale the difference between the boiling and freezing temperatures are 212 ° - 32 ° = 180°, so one degree Fahrenheti is one part of 180.

That means that 1 °C is a larger amount than 1 °C, so 20°C is a larger amount than 20°F.

Conclusion: 20 degree change represents a larger change in Celsius scale.

Step-by-step explanation:

In the Celsius scale each degree is one part of 100 degrees. This is because in this scale the difference between boiling and freezing temperatures of water is 100 ° - 0 ° = 100 °, so one degree Celsius is one part of 100.

In the Farhenheit scale, each degree is one part of 180 degrees. This is because in this scale the difference between the boiling and freezing temperatures are 212 ° - 32 ° = 180°, so one degree Fahrenheti is one part of 180.

That means that 1 °C is a larger amount than 1 °C, so 20°C is a larger amount than 20°F.

Conclusion: 20 degree change represents a larger change in Celsius scale.