Observing a Physical Change Big Idea 8: Properties of Matter Benchmark and Task Analyses SC.4.P.8.1 Measure and compare objects and materials based on their physical properties including: mass, shape, volume, color, hardness, texture, odor, taste, attraction to magnets. SC.4.P.8.3 Explore the Law of Conservation of Mass by demonstrating that the mass of a whole object is always the same as the sum of the masses of its parts. Investigates how technology and tools help to extend the ability of humans to SC.4.E.6.5 observe very small things and very large things. SC.4.N.1.6 Keep records that describe observations made, carefully distinguishing actual observations from ideas and inferences about the observations. Key Question What are the properties of a seltzer tablet? Teacher Background Information Physical changes in a substance or material result only in changes in the appearance of the material. While the size, shape, texture, etc., may be changed, the substance is still the same substance. Chemical changes result in a new substance being formed. A crystal is a form of a substance in which the atoms are arranged in repeating patterns. A powder is a substance that has been ground or pulverized into finely dispersed, loose, solid particles. Materials Per Group: 1 or more seltzer tablets 1 snack-size plastic bag 1 tape measure 1 sheet of black construction paper 2-3 toothpicks 1 microscope 1 triple-beam balance or electronic balance (the balance used must be sensitive enough to measure small amounts) Chart paper Rock salt crystals Per Student: Science notebook A Closer Look activity sheet Hand lens
Observing a Physical Change Big Idea 8: Properties of Matter Benchmark and Task Analyses SC.4.P.8.1 Measure and compare objects and materials based on their physical properties including: mass, shape, volume, color, hardness, texture, odor, taste, attraction to magnets. SC.4.P.8.3 Explore the Law of Conservation of Mass by demonstrating that the mass of a whole object is always the same as the sum of the masses of its parts. SC.4.E.6.5 Investigates how technology and tools help to extend the ability of humans to observe very small things and very large things. SC.4.N.1.6 Keep records that describe observations made, carefully distinguishing actual observations from ideas and inferences about the observations. Key Question What are the properties of a seltzer tablet? Teacher Background Information Physical changes in a substance or material result only in changes in the appearance of the material. While the size, shape, texture, etc., may be changed, the substance is still the same substance. Chemical changes result in a new substance being formed. A crystal is a form of a substance in which the atoms are arranged in repeating patterns. A powder is a substance that has been ground or pulverized into finely dispersed, loose, solid particles. Materials Per Group: 1 or more seltzer tablets 1 snack-size plastic bag 1 tape measure 1 sheet of black construction paper 2-3 toothpicks 1 microscope 1 triple-beam balance or electronic balance (the balance used must be sensitive enough to measure small amounts) Chart paper Rock salt crystals Per Student: Science notebook A Closer Look activity sheet Hand lens
Observing%20a%20Physical%20Change.docx