Which direct measurement would provide evidence that the energy of a substance had changed?

A. Temperature

B. Heat

C. Mass

D. Volume

Write the chemical equation for this process: ""Copper metal is placed in a solution of silver nitrate. This produces silver metal and copper nitrate solution.""

What is the mass of 6.80 moles h2o

According the recent research, ice skaters are able to glide smoothly across the ice because

Solids tend to be dense and difficult to?

Is testing for fingerprints on a door a physical or chemical change

True or False: It is recommended to use sugar cubes to sweeten lemonade because they have a low surface area.

54,000,000 nanometers equals 0.000000054 megameters.

When cream mixes with coffee, is this a chemical or physical change?

A gas occupies 72.1 at stp. At what temperature would the gas occupy 85.9 L at a pressure of 93.6 kPa?

An 80 kg volleyball player lands from a jump and tries to stop her forward motion. The normal contact force exerted by the floor on her shoes is 2000 N. The friction force exerted by the floor on her shoes is 600 N acting backward on the player.