States of Matter and Phase Changes

The video explains the phases of matter: solid, liquid, and gas. It demonstrates an experiment showing how water changes states under different temperatures. Ice melts to water, water evaporates to steam, and steam condenses back to water, which can be frozen into ice again. This process illustrates that substances can transition between states with heat application and removal. Examples include wax, gold, silver, iron, and copper.

What are the three primary phases of matter?

• Solid, Liquid, and Plasma

• Solid, Gas, and Plasma

• Solid, Liquid, and Gas

• Liquid, Gas, and Plasma

What happens to ice when it is heated in the experiment?

• It evaporates immediately

• It melts into water

• It remains as ice

• It turns into steam directly

What is the gaseous state of water called?

• Mist

• Fog

• Steam

• Vapor

What is the process of converting steam back to water called?

• Freezing

• Sublimation

• Condensation

• Evaporation

After condensation, what is the next step to get ice from water?

• Heating

• Deep Freezing

• Boiling

• Melting

Which of the following substances can exist in all three phases of matter?

• Wood

• Plastic

• Iron

• Paper

What is the process called when a solid turns into a liquid?

• Condensation

• Melting

• Sublimation

• Freezing

Which of the following is NOT a phase change?

• Boiling

• Melting

• Rusting

• Condensation