Which of the following is a chemical change

Melting ice

Boiling water

A burning candle

Frost for info inside a freezer

When copper (I) oxide dissolves in dilute sulfuric acid, copper (II) sulfate and copper are produced a) write the balanced chemical equation for the reaction b) discuss the changes in the oxidation states of copper in this reaction c) is copper (I)

Sulfur hexafluoride formula

Which mass of urea CO (NH2) 2 contain the same mass of nitrogen as 101.1g of potassium nitrate?

A light ray hits a hard, opaque object. the angle at which the light ray bounces off the object depends on the smoothness of the surface. the material the surface is made of. the angle at which the light hits the surface.

Enter the atomic symbol, including mass number and atomic number, for iodine-125.

Which type of luster gives the mineral the appearance of metal?

Anything that contains only one kind of material?

One mole of propane (c3h8) gas reacts with five moles of oxygen (o2) gas to produce three moles of carbon dioxide gas (co2) and four moles of water gas (h2o).

How many nitrogen molecules are in 1.2 moles of N2?

Which best describes how sediment forms?