A student records the mass of a piece of iron. The iron is then left outside until it rusts. What type of reaction occurs, and how does the mass of the object after rusting compare with its original mass?

Which of the following is a renewable energy source Trees Coal Oil Natural gas

Using ohm's law, explain how voltage changes in relation to current, assuming that resistance remains constant.

Chert has the following properties: • made up of very fine sediment grains no fixed crystal structure found in nature solid not a pure substance • not made by organisms Is chert a mineral or a rock?

Can someone explain Aromaticity?

Detectors in the walls of four containers (A-D) count the number of collisions between gas molecules and the surfaces of the containers. The detectors count 10, 15, 20, and 30 collisions per second for containers A, B, C, and D, respectively.

What types of matter could be separated by physical methods?

What information does a net ionic equation give that a complete ionic equation does not show

What is the molality of a solution containing 4.0 moles of solute in 3.2 kg of solvent? Round to the nearest tenth. Don't forget the units.

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.