Some substances have the same chemical composition, but their atoms are arranged differently. a classic example is carbon. a pencil lead is made of graphite, which contains only carbon atoms. a diamond also contains only carbon atoms. however, the carbon atoms in a diamond are packed more closely together. would you expect the density of graphite and a diamond to be the same? explain your answer.

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a. true or b. false