[SC2015] (5) 3 :
3 ) Examine matter through observations and measurements to identify materials
(e.g., powders, metals, minerals, liquids) based on their properties (e.g.,
color, hardness, reflectivity, electrical conductivity, thermal conductivity,
response to magnetic forces, solubility, density).
[SC2015] (5) 5 :
5 ) Construct explanations from observations to determine how the density of an
object affects whether the object sinks or floats when placed in a liquid.