materials
what is the most common material erasers are made of
rubber
what is an eraser called that erases on chalkboard
chalkboard eraser
when were erasers discovered
1770
what material was the first eraser made of
natural rubber
can you use a chalkboard eraser to erase marker on whiteboard
yes
true or false was the first eraser dicovered in 1771
false
how does natural rubber form
Natural rubber forms by tapping the milky white latex sap from Hevea brasiliensis trees, which is then coagulated using acid (like formic acid), washed, rolled into sheets to remove water, and dried. This raw, stretchy material is collected from trees in tropical regions, specifically Africa, Asia, and South america
what is an eraser called that you can form
gum eraser
what where the first erasers used for
removing pencil
what is pvc
plastic polymer
what is an eraser called that vibrates by itself and has a metal handle
electric eraser
is tree sap used for erasers
yes
name 6 materials erasers are made of
rubber vinyl polymer plastic wool gum
name 6 erasers
rubber erasers vinyl erasers electric erasers
chalkboard erasers plastic eraser polymer eraser
how does an eraser work
it becomes hot and sticky and the graphite sticks to it