Vacation or Conservation (Of Mass)

The video tutorial explores the concept of matter, its states, and how it undergoes physical and chemical changes. It explains the conservation of mass, demonstrating that matter cannot be created or destroyed, only transformed. Through practical examples, such as dissolving sugar in water, the video illustrates how mass remains constant despite changes in form. The tutorial concludes by reinforcing the idea that both physical and chemical changes adhere to the conservation of mass, setting the stage for further exploration of chemical changes.

What happens to the water in a glass when it evaporates?

• It turns into a new substance.

• It mixes with air molecules.

• It disappears completely.

• It loses its mass.

Which of the following is a clue that a chemical change is occurring?

• The substance changes color.

• The substance dissolves.

• The substance melts.

• Gas bubbles are produced.

What is the scientific rule that states mass is never made or lost?

• Conservation of Mass

• Law of Gravity

• Theory of Relativity

• Conservation of Energy

When sugar dissolves in water, what type of change occurs?

• Nuclear change

• Physical change

• Biological change

• Chemical change

If you mix 5 grams of sugar with 10 grams of water, what will the total mass of the solution be?

• 20 grams

• 5 grams

• 10 grams

• 15 grams