When we placed the bath bomb in water, we knew a chemical changed occurred. What evidence did you use to know it was a chemical change?

• The bath bomb melted.

• The bath bomb produced gas bubbles.

• The water turned a light pink color.

• The water temperature stayed the same.

Tags

NGSS.MS-PS1-2

Where did the gas in the bath bomb come from?

• The gas came from matter in the bath bomb.

• The gas came from the air around the bath bomb.

• The gas came from the air trapped in the bath bomb.

• No gas was produced by the bath bomb.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Why did we analyze a bath bomb in a closed zip lock baggie?

• The mass of the closed system increased.

• The mass of the closed system decreased.

• The mass of the closed system stayed the same.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Gases are matter.

• True

• False

Matter has mass and takes up ________.

• weight

• space

• energy

What claim would you make about the key combination of substances that is interacting together to cause the gas bubbles to appear?

• lemonade and citric acid

• lemonade and water

• citric acid and baking soda

• baking soda and water

Tags

NGSS.MS-PS1-2

What can we conclude about the gas in the bubbles?

• it is one of the substances we started with

• it is a new substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What properties were important to help us determine the gas from the bath bomb?

• percentage in outside air and boiling point

• density and boiling point

• flammability and percentage in outside air

• density and flammability

What did we learn from the electrolysis of water (when added energy to water)?

• Water is made up of carbon and hydrogen.

• Water is made up of hydrogen and oxygen.

• Water is made up of carbon and oxygen.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What did we learn about heating water on a hot plate?

• A new state of water was formed.

• A new state did not exist.

• A new substance was formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4