In this experiment, students are introduced to chemical and physical changes and challenged to use data and observations to determine types of changes. Students will observe physical and chemical properties of reactants and products to determine if a new product with different properties is created. Students will look at two reactions: dry ice with water and calcium carbonate with acetic acid.
Louisiana Student Standards for Science Connections
7-MS-PS-1-2: Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
Next Generation Science Standards Connections
MS-PS-1-2: Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
Texas Essential Knowledge and Skills for Science Connections
6.5C: Identify the formation of a new substance by using the evidence of a possible chemical change such as production of a gas, change in temperature, production of a precipitate, or color change.
7.6: The student is expected to distinguish between physical and chemical changes in matter.