MINDSET

This Performance Assessment is designed to:

• allow students to utilize their knowledge of properties of matter as they observe properties of two unknown substances and compare them to four known mixtures.
• encourage students to apply their knowledge of properties of matter as they predict the identity of the unknown substances based on their observations.
• promote problem-solving skills by encouraging students to find appropriate solutions to problems.
• assess students’ understanding of pH.
• assess students’ understanding of solubility and miscibility.
• assess students’ understanding of chemical and physical changes.

Students problem-solving skills incorporate:

• Science: understanding that hydrogen ion and hydroxide ion concentrations influence the chemical property of pH.
• Technology: understanding that there are even more precise instruments than pH paper to accurately determine pH.
• Math: understand that hydroxide and hydrogen ion concentrations are measured by pH.