Exploring Matter and Density Concepts

What happens when a bath bomb reacts in water?

• It dissolves without any reaction.

• It releases bubbles and fizz.

• It changes color but remains solid.

• It evaporates completely.

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

• Salt and sugar

• Baking soda and citric acid

• Flour and water

• Vinegar and oil

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

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

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

• Soluble

• Insoluble

• Saturated

• Diluted

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

• Evaporation

• Condensation

• Sublimation

• Freezing

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

• Coin

• Oil

• Wood

• Bath bomb

What tool do we use to measure volume?

• Thermometer

• Ruler

• Graduated cylinder

• Stopwatch

Which property of matter describes how easily a substance flows and pours?

• Density

• Viscosity

• Solubility

• Conductivity

A block has a mass of 120 g and a volume of 60 cm³. What is its density? Will it sink or float in water?

• 1 g/cm³, float

• 2 g/cm³, sink

• 0.5 g/cm³, float

• 3 g/cm³, sink

A liquid has a density of 0.8 g/mL and a volume of 250 mL. What is its mass?

• 200 g

• 250 g

• 300 g

• 400 g