The video explains that solutions are mixtures where particles are evenly distributed. While commonly thought of as solids dissolved in liquids, solutions can also involve gases or liquids dissolved in other liquids. Examples include mixtures of gases and metal alloys, where solids dissolve in other solids.

What does it mean for particles to be homogeneously distributed in a solution?

• Particles are concentrated in one area.

• Particles are unevenly spread out.

• Particles are evenly spread throughout the solution.

• Particles are only at the bottom of the solution.

Which of the following is NOT a type of solution?

• A gas dissolved in another gas

• A solid dissolved in a liquid

• A solid dissolved in another solid

• A liquid dissolved in another liquid

What is an example of a solution involving gases?

• Salt in water

• Sugar in tea

• Oxygen in nitrogen

• Copper in gold

What is a common example of a solid dissolved in another solid?

• Salt in water

• Bronze, an alloy of copper and tin

• Air in water

• Oil in water

Which of the following is an example of a mixture of two gases?

• Oxygen in nitrogen

• Carbon dioxide in water

• Iron in carbon

• Sugar in milk