Law of Conservation of Matter Quiz

What is the initial question posed about matter in the video?

• How does matter change chemically?

• Can matter be transformed?

• Can matter be created or destroyed?

• What is the mass of matter?

Which of the following is NOT a property of matter?

• It has mass.

• It takes up space.

• It can change chemically.

• It can be seen.

What does the Law of Conservation of Matter state?

• Matter does not have mass.

• Matter is always visible.

• Matter can only be transformed or changed.

• Matter can be created and destroyed.

How are Legos used as an example in the video?

• To explain the chemical change in matter.

• To illustrate the destruction of matter.

• To demonstrate the transformation of matter.

• To show how matter is created.

What happens to the mass of substances in a closed system during a chemical reaction?

• It decreases.

• It remains the same.

• It disappears.

• It increases.

In the example with the flask, what is the mass before and after the reaction?

• 70 grams before and 67.2 grams after.

• 67.2 grams before and 70 grams after.

• 70 grams before and 70 grams after.

• 67.2 grams before and 67.2 grams after.

What is the significance of the cap on the flask in the chemical reaction example?

• It prevents matter from leaving.

• It changes the mass of the flask.

• It creates new matter.

• It allows matter to enter.

What happens to the particles when ice melts?

• They disappear.

• They increase in number.

• They remain the same but change state.

• They decrease in number.

What is the final conclusion about the creation or destruction of matter?

• Matter is neither created nor destroyed.

• Matter can be destroyed in certain conditions.

• Matter is always visible.

• Matter can be created in certain conditions.

What must always equal the mass of the products in a reaction?

• The color of the reactants.

• The temperature of the reactants.

• The volume of the reactants.

• The mass of the reactants.