Exploring Phases of Matter with Bill Nye

The video explores the three states of matter: solid, liquid, and gas, and how energy influences phase changes. It includes experiments with liquid nitrogen and discusses the concept of absolute zero. Practical demonstrations illustrate how matter changes phases, emphasizing the role of energy in these transformations.

What are the three phases of matter?

• Liquid, Gas, Plasma

• Solid, Gas, Plasma

• Solid, Liquid, Plasma

• Solid, Liquid, Gas

What is the main factor that causes matter to change phases?

• Density

• Energy

• Volume

• Pressure

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What happens to the molecules of water when it is heated?

• They stay the same

• They move faster and get farther apart

• They disappear

• They move slower and get closer together

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What is the temperature of liquid nitrogen?

• -100°C

• -196°C

• -273°C

• 0°C

What is absolute zero?

• The temperature at which gas becomes liquid

• The temperature at which ice melts

• The temperature at which water boils

• The temperature at which molecular motion stops

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Why can't absolute zero be reached?

• Because there is always some source of heat

• Because it is too cold

• Because molecules never stop moving

• Because it is too hot

What is the main ingredient used to make rock candy?

• Salt

• Sugar

• Baking soda

• Vinegar

What phase change occurs when solid carbon dioxide is placed in warm water?

• Gas to liquid

• Solid to gas

• Liquid to gas

• Solid to liquid

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How does matter behave in the gas phase?

• It takes the shape of its container

• It becomes solid

• It holds its shape

• It flows and takes the shape of its container

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How can you prove that invisible gas is matter?

• By touching it

• By smelling it

• By weighing it

• By seeing it