Question

mrs. franklin loves teaching science and thinks about it all the time. while walking one day, she steps on a warm, fresh piece of used gum. the gum flattens and sticks to her shoe. when she lifts her foot, she sees long strings of gum between her shoe and the sidewalk. she thinks, \what a great demonstration of the properties of metals!\ what properties of metals would mrs. franklin most likely teach about with this demonstration?
conductivity and luster
ductility and malleability
malleability and reactivity
conductivity and ductility

Explanation:

Step1: Define ductility and malleability

Ductility is the ability of a material to be drawn into thin wires. Malleability is the ability of a material to be hammered or rolled into thin sheets.

Step2: Relate to gum example

The gum is stretched (like ductility - drawn into strings) and flattened (like malleability - hammered/rolled into a sheet).

Answer:

ductility and malleability