Solubility and Solutions

Maya, Liam, and Evelyn are in a chemistry lab. They are discussing about solutions. According to their discussion, what are solutions?

• 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

David, Maya, and Abigail are making a lemonade. How does the lemonade (solution) form?

• The lemon juice (solute) particles pull the water (solvent) particles apart and surround them

• The water (solvent) particles pull the lemon juice (solute) particles apart and surround them

• The lemon juice (solute) particles combine with the water (solvent) particles to form a new substance

• The water (solvent) particles combine with the lemon juice (solute) particles to form a new substance

Priya was conducting a science experiment in her kitchen. She was trying to dissolve sugar in a cup of hot tea. She kept adding sugar until no more could dissolve. What would you call this type of solution?

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

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

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

• A solution that holds an equal amount of solute and solvent

Tags

NGSS.MS-PS1-4

Benjamin, James, and Nora were conducting a science experiment. They were trying to dissolve sugar in a glass of water at room temperature. Benjamin noticed that the sugar was not completely dissolving. How would you describe this solution?

• 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 more solute than is normally possible at that temperature

• A solution that holds an equal amount of solute and solvent

Luna, Charlotte, and Emma were conducting a science experiment. They heated a solution to dissolve more sugar than it could normally hold at room temperature. Once cooled, the sugar remained dissolved. What type of solution did they create?

• 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 an equal amount of solute and solvent

Tags

NGSS.MS-PS1-4

Lily, Noah, and Ethan are conducting a science experiment. They are trying to dissolve different substances in water. What factors might affect the solubility of these substances?

• Like dissolves like

• Opposites attract

• Temperature and pressure

• Concentration and volume

Tags

NGSS.MS-PS1-4

Aiden, Abigail, and Avery are conducting an experiment in their chemistry class. They are trying to understand the relationship between the solubility of a gas in a liquid and its pressure. Which of the following statements best describes their experiment, also known as Henry's Law?

• The solubility of a gas in a liquid is directly proportional to its pressure

• The solubility of a solid in a liquid increases with increasing temperature

• The solubility of a gas in a liquid decreases with increasing temperature

• The solubility of a solid in a liquid is directly proportional to its pressure

David is conducting a science experiment in his kitchen. He wants to understand how temperature affects the solubility of sugar (a solid solute) in water (a liquid solvent). How would the solubility of sugar change if David increases the temperature of the water?

• The solubility of sugar would increase with increasing temperature

• The solubility of sugar would decrease with increasing temperature

• The solubility of sugar would remain constant with changing temperature

• The solubility of sugar would not be affected by temperature

Tags

NGSS.MS-PS1-4

Mason, Abigail, and Evelyn are conducting a science experiment. They are observing a soda can in different temperatures. According to their observations, how does the temperature affect the solubility of carbon dioxide gas in the soda?

• The solubility of carbon dioxide increases with increasing temperature

• The solubility of carbon dioxide decreases with increasing temperature

• The solubility of carbon dioxide remains constant with changing temperature

• The solubility of carbon dioxide is not affected by temperature

Tags

NGSS.MS-PS1-4

Elijah is working on a chemistry experiment and needs to calculate the molarity of his solution. Can you help him understand the correct formula for molarity?

• mol of solute / L of solution

• mass % of solute / total mass of solution

• mol of solute / kg of solvent

• mass of solute / volume of solution