What properties of silicon dioxide make it sueful in sandpaper?

Answer 1

Use/equipment

Your chemical dioxide

Main properties to use

Chemical or physical properties?

Fire extinguisher

Carbon dioxide

- CO2 does not conduct electricity.

- CO2 is heavy (dense) so it covers fire and removes the oxygen.

- CO2 does not burn.

Physical

physical

chemical

Electrical wires

Copper

-copper can bend (malleable)

-conducts electricity

- does not corrode easily

Physical

Physical

Chemical

Welding

Argon

-very unreactive, so it provides an inert atmosphere.

Chemical

Sand paper

Silicon dioxide

It very hard and does not crumble (not brittle)

-High melting point

Physical

Physical

Tools

Iron

-Iron is strong and hard

-Iron can change shape (malleable)

Physical

Physical

Computer circuits

Silicon

-Silicon can conduct electricity.

-silicon has very high melting points.

Physical

Physical