What is matter? -- Common forms of matter -- Properties of matter -- The property of hardness -- Can you scratch it? -- Can you dent it? -- Use your senses -- Hard to soft -- Soft to hard -- Activity: Scratch it!.
Summary:
"Some objects can be scratched or dented easily. Others can take a beating and still look as good as new. This may be one sign of hardness. This accessible text introduces basic concepts about the property of hardness of matter. Readers learn how to identify hardness through senses and tests, as well as how hardness may change. A hands-on activity gives readers a chance to experience the concepts in action. Fast facts and vivid images offer additional nuggets of information. This title supports students' ability to "classify different kinds of materials by their observable properties" in grade 2, as specified in the Next Generation Science Standards"-- Provided by publisher.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.