Phase change Hamilton

Multiple Choice

The molecules in the picture are tightly held together with little movement. They have shape and energy.  Therefore, the picture represents _________.

• solid
• liquid
• gas
• plasma

Multiple Choice

What are the two types of energy that particles have?

• Potential energy and kinetic energy

• Thermal energy and electrical energy

• Chemical energy and nuclear energy

• Mechanical energy and gravitational energy

Multiple Choice

The total potential and kinetic energy of all the microscopic particles in an object make up its

• chemical energy.

• electric energy.

• nuclear energy.

• thermal energy.

Multiple Choice

As kinetic energy of the molecules in a substance increases, the temperature __________.

• increases
• decreases
• stays the same
• Atoms don't have kinetic energy

Multiple Choice

In science class temperature is measured in ..

• Fahrenheit

• Centimeters

• Celcius

• Ruler

Open Ended

How are kinetic energy and temperature related to each other?

Open Ended

A chef needs to increase the temperature of a food dish. She thinks she can do this by stacking another dish on top of it. She has three dishes to choose from for the top dish: A, B, and C. Which one of these dishes would make the food dish the warmest when placed on top of it? As part of your answer, explain how the energy and temperature of both the top dish and the food dish will change when the food dish warms up, and why.

Open Ended

What is happening between 2-9 minutes and 17- 20 minutes? Explain.

Multiple Choice

What happens to a solid's particles at its melting point?

• They vibrate slowly

• They break apart completely

• They vibrate so fast that they break free from their fixed position

• They remain stationary

Reorder

What is the order of steps that makes food in the fridge stay cold?

• Warm molecules of the food collide with the cold molecules of the fridge

• The faster molecules transfer energy to the slower molecules when they collide

• The slower molecules begin to move faster and the fast molecules begin to move slower

• The molecules reach equilibrium when the speed of all molecules are the same

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

Scientists have a container of water. Water can be a solid, liquid, or gas. At first, the water molecules in the container were moving around each other. Later, the water molecules were moving in place. What change did the scientists observe?

• No change happened

• an endothermic change

• a big change

• an exothermic change

Multiple Choice

The steam coming off the pot of boiling water is an example of....

• a solid becoming a liquid
• a liquid becoming a solid
• a liquid becoming a gas
• a gas becoming a liquid

Open Ended

Why does water from a puddle disappear on a sunny day?

Multiple Choice

What are the two main types of vaporization?

• Condensation

• Boiling

• Sublimation

• Evaporation

Multiple Choice

What is the primary difference between evaporation and boiling?

• Evaporation occurs at any temperature, while boiling occurs at a specific temperature.

• Evaporation turns a liquid into a solid, while boiling turns a liquid into a gas.

• Evaporation occurs only on the surface, while boiling occurs throughout the liquid.

• Both A and C

Multiple Choice

The picture shows a cumulonimbus cloud forming over an ocean. Which statement best explains how the sun and the ocean interact to form a cumulonimbus cloud?

• Heat from the sun warms the ocean causing water to evaporate. The water vapor then condenses to form a cumulonimbus cloud.

• Heat from the sun causes clouds in the area to gather over the ocean and form on large cumulonimbus cloud.

• Light from the sun shines on the ocean, causing water vapor to condense. The water then evaporates to form a cumulonimbus cloud.

• Light from the sun causes ocean water to reflect water vapor in the air and gather over the ocean into a cumulonimbus cloud.

Multiple Choice

What is the main difference between boiling and evaporation?

• Boiling occurs at all temperatures

• Evaporation occurs at one specific temperature

• Boiling occurs at one specific temperature

• Evaporation occurs only at boiling point

Multiple Choice

What causes pressure in gases?

• Collisions of gas particles

• Temperature of the gas

• Volume of the gas

• Density of the gas

Multiple Select

At higher altitudes, which one becomes true?

• Higher the altitude, higher the atmospheric pressure.

• Higher the altitude, greater the force exerted by air molecules.

• It's an example of fluid pressure.

• The higher you go, lesser is the atmospheric pressure.

Multiple Choice

What are the processes represented in the phase change diagram for transitioning from solid to liquid and from liquid to gas?

• Condensation and Freezing

• Vaporization (boiling/evaporation) and Melting

• Freezing and Vaporization

• Melting and Condensation

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident