Why does chocolate melt faster when crushed?

If a substance cannot be separated physically it is?

The flame in a torch used to cut metal is produced by burning acetylene (C2H2) in pure oxygen. Assuming the combustion of 1 mole of acetylene releases 1251 kJ of heat, what mass of acetylene is needed to cut through a piece of steel if the process

Which must be true when work is done on an object resting object and the object moves?

What is the relationship between the internal energy of a substance and its particle movement?

How many moles of hydrogen will react with 40g oxygen

Which type of wave has a wave perpedicular to the disturbance? A: Mechanical B: Transverse C: Longitude D: Surface

What minerals that are heavy, durable, and chemically resistant are likely to be found in what kind of deposites?

You have arrived on a planet where S2, not O2, is the gas used as fuel in combustion reactions. When gaseous propane (C3H8) is burned in S2, H2S and carbon disulfide gases are produced. If 200.0 grams of propane and 75.

What are not chemical properties of matter?!

Calculate the mass of water produced when 2.06 g of butane reacts with excess oxygen.