7.1 L 2&3

In the context of bath bombs, what does the word soluble mean?

• The ability to float

• The ability to mix with oil

• The ability to create a smell

• The ability to dissolve in water

What does it mean if an ingredient is insoluble?

• It dissolves only a little

• It does not dissolve in water

• It dissolves completely

• It smells nice

What is the purpose of mixing the ingredients with water?

• To observe if gas bubbles form

• To test the taste of the mixture

• To see if they change color

• To make a bath bomb

Tags

NGSS.MS-PS1-2

What could be inferred if gas bubbles are observed when mixing ingredients with water?

• The water temperature is too high

• The ingredients are dissolving slowly

• The ingredients are changing color

• A chemical reaction is occurring

Tags

NGSS.MS-PS1-2

What would be the best way to measure the reaction rate of gas bubbles from the ingredients in water?

• By counting the bubbles visually

• By measuring the volume of water remaining

• By timing how quickly they appear and disappear

• By measuring the temperature change

Tags

NGSS.MS-PS1-2

Which ingredient in Recipe C is likely adding a unique property not found in the other recipes?

• Table salt

• Baking soda

• Coconut oil

• Citric acid

Comparing all recipes, which ingredient is used in every one?

• Olive oil

• Citric acid

• Epsom salts

• Baking soda

When investigating whether mixing ingredients with water creates gas bubbles, why would it be helpful to test each ingredient separately?

• It guarantees the ingredients remain unchanged

• It ensures you waste time for no reason

• It complicates the process unnecessarily

• It isolates variables to identify which specific ingredient causes the reaction

Tags

NGSS.MS-PS1-2

What evidence would help determine how a bath bomb produces gas bubbles?

• Measuring the mass of the water before and after mixing

• Watching how long the ingredients float

• Recording which mixtures produce bubbles when combined with water

• Observing the temperature of the water

Tags

NGSS.MS-PS1-2

When testing your bath bomb recipes, why is it crucial to avoid mixing multiple ingredients together at once?

• To use less water

• To ensure accurate observation of each ingredient’s properties

• To prevent a large explosion

• To make cleaning easier

Tags

NGSS.MS-PS1-2