Materials may be composed of parts that are too small to be seen without magnification.
The most closely related standard is at a higher level of sophistication.
| NSES Content Standard B
Physical Science: Structure of atoms Grades 9-12, page 178 Matter is made of minute particles called atoms, and atoms are composed of even smaller components. These components have measurable properties, such as mass and electrical charge. Each atom has a positively charged nucleus surrounded by negatively charged electrons. The electric force between the nucleus and electrons holds the atom together. |