Exploring Matter and Density Concepts

Explain what happens when a bath bomb reacts in water. What causes the bubbles?

• The bath bomb dissolves, releasing fragrance.

• The bath bomb reacts with water, releasing gas bubbles.

• The bath bomb changes color.

• The bath bomb melts due to heat.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which ingredients in a bath bomb are responsible for its reaction in water?

• Salt and sugar

• Baking soda and citric acid

• Oil and fragrance

• Water and dye

Tags

NGSS.MS-PS1-2

What gas is released during the reaction of a bath bomb in water?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

Tags

NGSS.MS-PS1-2

If a substance cannot dissolve in water, we say it is _______________.

• Soluble

• Insoluble

• Saturated

• Diluted

Why are some substances soluble in water while others are not? Provide examples of each.

• Due to temperature differences; sugar is soluble, sand is not.

• Due to molecular structure; salt is soluble, oil is not.

• Due to pressure differences; air is soluble, metal is not.

• Due to color differences; dye is soluble, wood is not.

What is the process of water changing from a gas to a liquid called?

• Evaporation

• Condensation

• Sublimation

• Freezing

Tags

NGSS.MS-ESS2-4

What is sublimation? Provide an example.

• The process of a liquid turning into a gas; example: boiling water.

• The process of a solid turning directly into a gas; example: dry ice.

• The process of a gas turning into a liquid; example: dew formation.

• The process of a liquid turning into a solid; example: freezing water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Compare what happens to the mass of matter in a closed system versus an open system when changes occur.

• Mass increases in both systems.

• Mass decreases in both systems.

• Mass remains constant in a closed system but can change in an open system.

• Mass remains constant in an open system but can change in a closed system.

Tags

NGSS.MS-PS1-5

What does density measure in a substance?

• The color of the substance

• The mass per unit volume of the substance

• The temperature of the substance

• The solubility of the substance

Which of these substances would sink in water: a coin, oil, wood, or a bath bomb?

• Coin

• Oil

• Wood

• Bath bomb