When elements combine to form compounds does there properties change?

Which stantment about temperatures in earths atmosphere is true Air temperature remains constant and all layers of earths atmosphere air temperature cannot be measured be on the troposphere Air temperature gets warmer as you move away from earth

Mercury forms two common ions, mercury (1) and mercury (2). What is the correct term for the mercury (2) ion? A. mercuric. B. mercurite. C. mercuride. D. mercurous.

Why are hydrogen and oxygen written as H2 and O2? 1. They are diatomic molecules. 2. All individual elements have the subscript 2. 3. To balance the equation.

Which Alkali Metal Carbonate? Imagine you are an analytical chemist and have received a sample of a pure alkali metal carbonate from a newly discovered deposit. Your task is to determine which alkali metal carbonate is present in the sample.

What is an example of a compound structure

What substance is not a compound

Consider the following exothermic reaction and predict how the change below will affect the concentration (increase, decrease, stay the same) of each component in the system as the equilibrium is reestablished.

How does the electron structure of atoms change when they form chemical bonds

What is the scientific notation for 1073

What is the force that opposes the sliding motion of two touching surfaces?