What is a physical property of a substance and what are physical changes?
A physical property is a property of a substance that does not involve a chemical change.
Evidence of physical changes include: change of shape, weight, color, volume, hardness, state of matter, texture (life if you sand a piece of wood, it is still wood but smoother).
Physical Properties– http://chemistry.elmhurst.edu/vchembook/104Aphysprop.html
- MELTING POINT/BOILING POINT–
- Examples- http://easyscienceforkids.com/boiling-and-freezing-points/
- Melting Point- http://www.dictionary.com/browse/melting-point
- Boiling Point- https://www.sciencedaily.com/terms/boiling_point.htm
- good explanation but it is a physical change, not chemical- http://study.com/academy/lesson/solubility-lesson-for-kids-definition-rules.html
- YouTube- https://www.youtube.com/watch?v=GRuUYaOBM7E
- The density of an object is determined by two things: the mass of the molecules in the object, and how tightly packed the atoms are together.
- A brick has high density because it is made from molecules that have a lot of mass. The atoms are packed closely together.
- Styrofoam is low density. The molecules in Styrofoam don’t have a lot of mass. The atoms are loosely packed with lots of holes and air between them.