Solubility

Harper, Luna, and Priya are in a chemistry lab. They are given two or more pure substances and asked to create a solution. What would they end up with?

• Homogeneous mixtures of two or more pure substances

• Heterogeneous mixtures of two or more pure substances

• Compounds formed by the combination of two or more elements

• Mixtures of a solute and a solvent

Emma, Luna, and Liam are conducting a science experiment. They need to choose a solvent that can dissolve the most substances. Which solvent should they choose?

• Water

• Alcohol

• Oil

• Acid

Avery, Sophia, and Arjun are conducting a science experiment. They want to understand how a solution forms when they mix sugar in water. Can you explain the process to them?

• The sugar particles pull the water apart and surround them

• The water particles pull the sugar apart and surround them

• The sugar particles combine with the water particles to form a new substance

• The water particles combine with the sugar particles to form a new substance

Evelyn, Oliver, and Aria are conducting a science experiment. They are trying to dissolve sugar in a cup of hot tea. Evelyn says that the tea is a saturated solution. What does she mean by a saturated solution?

• A solution that holds as much sugar as is possible at that temperature

• A solution that holds less sugar than is possible at that temperature

• A solution that holds more sugar than is normally possible at that temperature

• A solution that holds equal amounts of sugar and tea

Elijah, Anika, and Olivia are conducting a science experiment. They are trying to dissolve sugar in a glass of water at room temperature. Elijah suggests that they have created an unsaturated solution. What does he mean by an unsaturated solution?

• A solution that holds less sugar than is possible at that temperature

• A solution that holds as much sugar as is possible at that temperature

• A solution that holds more sugar than is normally possible at that temperature

• A solution that holds equal amounts of sugar and water

Samuel, Nora, and Aria were conducting a science experiment in their chemistry class. They were asked to create a supersaturated solution. Can you help them understand what a supersaturated solution is?

• A solution that holds more solute than is normally possible at that temperature

• A solution that holds less solute than is possible at that temperature

• A solution that holds as much solute as is possible at that temperature

• A solution that holds equal amounts of solute and solvent

Ethan and Nora are conducting a science experiment and want to dissolve a substance in a liquid. They are given heptane and hexane (both nonpolar substances). Will these two substances dissolve if mixed together?

• No because likes dissolve dislikes

• No because they are not the same polarity

• Yes because likes dissolve likes and they are the same polarity

• No they are immiscible substances

Elijah is conducting an experiment in his chemistry class. He notices that when he increases the pressure of the gas above a liquid, the solubility of the gas in the liquid also increases. Which law is Elijah observing?

• He is observing Henry's Law, which states that the solubility of a gas in a liquid is directly proportional to its pressure

• He is observing a law that states the solubility of a solid in a liquid increases with increasing temperature

• He is observing a law that states the solubility of a gas in a liquid decreases with increasing temperature

• He is observing a law that states the solubility of a solid in a liquid is directly proportional to its pressure

Anika, Grace, and Lily are conducting a science experiment. They want to understand how temperature affects the solubility of sugar (a solid solute) in water (a liquid solvent). How does the solubility change with temperature?

• The solubility of sugar increases with increasing temperature

• The solubility of sugar decreases with increasing temperature

• The solubility of sugar remains constant with increasing temperature

• The solubility of sugar is not affected by temperature

How does climate change, leading to rising water temperatures, affect dissolved oxygen levels in oceans and their impact on marine life?

• Rising water temperatures increase dissolved oxygen levels, benefiting marine life.

• Rising water temperatures have no effect on dissolved oxygen levels in oceans.

• Rising water temperatures decrease dissolved oxygen levels, which can harm marine life.

• Rising water temperatures primarily affect freshwater ecosystems, not marine environments.