Which of the following is a physical change? A. corrosion B. explosion C. evaporation D. food spoilage

Which compound is soluble in water?

If you were asked to describe metals and magnetism you could say. A. non-paired electrons spin in opposite directions in all metals, creating a magnetic field. B. metals are magnets because they have more electrons than non-magnetic materials. C.

A Block has a volume of 0.09 m³ and a density of 4000 kg/m³. what's the force of gravity acting on the block in water

Both obsidian and pumice are formed from which of the following? - Ocean sediments - Earthquakes - Flooding - Volcanoes

a 22.44 g sample of metal absorbs 180.8 J of hear, upon which the temprature of the sample increases from 21.1 °C to 45.0 °C. what is the specific heat of that metal

Explain the difference between two types of elements with respect to the atoms

The ro - group is the nucleophile. think about which group in the alkyl halide (iodoethane) is the leaving group. keep in mind that the leaving group may be one atom or a group of atoms.

An organic compound is classified as aromatic if it cyclic and has a fragrant odor true or false

Which subatomic particles differ in number for two isotopes of the same element, and which subatomic particles will stay consistent between two isotopes of the same element? Explain how you know.

What is the oxidation state of an individual phosphorus atom in PO33-?