Classify and compare substances on the basis of characteristic
physical properties that can be demonstrated or measured; for
example, density, thermal or electrical conductivity, solubility,
magnetic properties, melting and boiling points, and know that
these properties are independent of the amount of the sample.
Explore and describe the densities of various materials through
measurement of their masses and volumes.
Differentiate between weight and mass recognizing that weight is
the amount of gravitational pull on an object and is distinct from,
though proportional to, mass.
Differentiate between physical and chemical properties and
physical and chemical changes of matter.
Differentiate between physical changes and chemical changes.