What indicates a chemical change?

A) Change from a liquid to a gas

B) Change in the amount of material

C) Change in the type of substance present

D) Change in the texture of a substance

Which two substances do geologists use in radiocarbon dating?

Which is composed of alkynes? acetylene margarine rubber tires polystyrene cups

Catalysts can save money by essentially lowering the: activation energy cost of reactants rate of reaction temperature required starting enthalpy (e1)

A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 + and Fe3 + has a cell potential of 0.727 V.

What is radioactive isotopes

You move a 25N object 4 meters. Find the work you did

What is the relationship between matter and elements

Which of these would be an appropriate way to describe the concentration of orange candies? Check all that apply the number of orange candies divided by total number of candies the mass of orange candies divided by total mass of candies the volume

What can show the presence of carbon dioxide?

How does the shape of a structure affect its overall strength