Unit 1 Lab 1 Flashcard

Front

What is the principle of mass conservation in a closed system?

Back

The principle of mass conservation states that mass cannot be created or destroyed in a closed system; it can only change forms.

Front

What happens to the mass of a system when a solid is dissolved in a liquid?

Back

The total mass of the system remains the same, as the mass of the solute and solvent combine.

Front

What is a precipitate in a chemical reaction?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

How does heating a sealed container with a solid affect the mass?

Back

The mass remains the same because no matter can escape the sealed container.

Front

What is the effect of spilling matter on the mass of a system?

Back

Spilling matter decreases the total mass of the system because some of the mass is lost.

Front

What is the significance of using a closed system in experiments?

Back

Using a closed system ensures that no mass enters or leaves, allowing for accurate measurements of mass changes.

Front

What is the relationship between volume and mass in a physical change?

Back

In a physical change, the mass remains constant while the volume may change.

Front

What is the outcome when steel wool is burned?

Back

When steel wool is burned, it reacts with oxygen, resulting in an increase in mass due to the formation of iron oxide.

Front

What is the role of temperature in the dissolution of sugar in water?

Back

Temperature affects the solubility of sugar; higher temperatures generally increase the rate at which sugar dissolves.

Front

What happens to the mass of a candle in a closed container as it burns?

Back

The mass remains the same because all products of combustion are contained within the closed system.