When a new material is made by combining two or more materials, it has
properties that are different from the original materials. For that reason,
a lot of different materials can be made from a small number of basic kinds
of materials.
NSES Content Standard B
Physical Science: Properties of objects and materials Grades K-4, page 127 Objects are made of one or more materials, such as paper, wood, and metal. Objects can be described by the properties of the materials from which they are made, and those properties can be used to separate or sort a group of objects or materials. NSES Content Standard B
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