Which processes represent one chemical change

and one physical change?

(1) freezing and melting

(2) freezing and vaporization

(3) decomposition and melting

(4) decomposition and combustion

Which lists the carbohydrates in order of increasing chemical energy? a monosaccharides, polysaccharides, disaccharides b disaccharides, monosaccharides, polysaccharides c polysaccharides, disaccharides, monosaccharides d monosaccharides,

When you put the egg into the vinegar, the vinegar took the shell off the egg. Was this a physical or chemical change?

a gas sample at 45 C has a pressure of 123 kPa. if the gas is cooled to 30 C, what is the new pressure?

Why are lab apparatus made of ceramics

In two or more complete sentences describe how atomic radius changes as you move down a group in the periodic table and why.

How many moles of co2 could fit in a 475 ml bag at - 22c and 1.125 atm?

How mant atoms are in 3N2

The type of nuclear decay an unstable nucleus will undergo depends on its ratio of neutrons to protons. The radioisotope cobalt-65 has a ratio of neutrons to protons of 1.41, which is too high for a nucleus of this size.

1.87 $/gal to dollars per liter, Express your answer using three significant figures.

What can a student do to increase the force of attraction of a magnet on an iron block?