Exploring the Law of Conservation of Mass in Different Systems

What does the law of conservation of matter state?

• Matter cannot be created nor destroyed.

• Matter can be created and destroyed.

• Matter can only be destroyed.

• Matter can only be created.

Tags

NGSS.MS-PS1-5

What was the purpose of the investigation?

• To see if the law of conservation of matter applies to both open and closed systems.

• To create new matter.

• To destroy matter.

• To measure the temperature change in reactions.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What did the bubbles indicate in the open system experiment?

• A physical change.

• A temperature change.

• A chemical reaction.

• No reaction.

Tags

NGSS.MS-PS1-2

What was added to the baking soda in the open system experiment?

• Sugar

• Water

• Vinegar

• Salt

Tags

NGSS.MS-PS1-2

Why was the closed system sealed during the experiment?

• To prevent the substances from escaping.

• To increase the temperature.

• To change the color of the reaction.

• To decrease the pressure.

Tags

NGSS.MS-PS1-5

What was the purpose of the visual demonstration in the closed system experiment?

• To show the gas being contained.

• To show the temperature change.

• To show the mass change.

• To show the color change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What was placed in the balloon for the effervescent tablet experiment?

• Baking soda

• Water

• Crushed effervescent tablet

• Vinegar

What should be done carefully during the effervescent tablet experiment?

• Adding salt

• Heating the mixture

• Stirring the mixture

• Placing the balloon on the glass

What does the law of conservation of matter ensure in a closed system?

• Mass decreases.

• Temperature increases.

• Color changes.

• Gas is conserved and does not escape.

Tags

NGSS.MS-PS1-5

What happens to the balloon in the closed system experiment?

• It stays pumped up.

• It deflates.

• It changes color.

• It bursts.

Tags

NGSS.MS-PS1-4