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?

Answer is: ductility and malleability.

Gum changes is deformed (it changes shape). This is physical shape.

The same substance is present before and after the psysical change, just with different form (shape) or state of matter.

Ductility is the property of the metal to be deformed without losing toughness.

Mallebility is the property or ability of the metal to be hammered or pressed into shape without breaking or cracking.

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.