An investigation involves determining which metal is better for making pots that will cook food faster. Which is the best hypothesis to use for this investigation?
Copper is better than iron for making pots.
Copper is more malleable and heats up faster than iron.
If copper is a better conductor, it will heat up faster than iron.
If copper heats up faster than iron, it is better for making pots

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.

What are the relative strengths of intermolecular forces compared to the forces between ions in a salt or the forces between metal atoms in a metallic bond?

Awheelchair ramp needs to be pitched at 8 degrees. if the ramp is to access an 18-inch step to a door what will be the length of the ramp to the nearest inch?