A change in the properties of matter where chemical bonds are broken and new bonds are formed is

a.) a chemical change

b.) a physical change

c.) an ionic change

d.) a covalent change

17. If 5.00 L of an ideal gas is cooled from 24°C to - 27000 what will the volume of the gas become?

What best describes a star clusters

An unknown mineral scratches glass but will not scratch quartz. Which measure on the Mohs scale shows its hardness?

NOT the correct way to write the electron configuration for mercury (Hg) ?

What were the concentrations of the solutions (zinc solution, copper solution, and salt bridge) ? Were the concentrations consistent with those of standard state conditions? Explain your answer.

What is the mass in grams of 390 mL

Around 1910, Rutherford bombarded gold foil with alpha particles. Most of the alpha particles passed straight through. To his surprise, a smaller number were deflected by 180°. This summary recounts the scientific discovery of A.

What is the density? Mass = 120 g Volume = 96 mL

A spoonful of salt is stirred into a pot of water. The salt is a

What are some catchy projects titles for the question, "What liquids cause the most tooth decay?"