When heat, light, or sound is given off or absorbed, is it a chemical change, chemical property, physical change, or physical property?

Which of the following best explains what happens when the kinetic energy of particles in a liquid state increases? They move slowly enough that the particles are no longer held together, resulting in a gas.

Write a balanced equation (including physical states) for the following reaction: Glucose, a sugar, C6H12O6, is oxidized in the body to produce water and carbon dioxide.

Analysis of a 10.15 g sample of a compound known to contain only phosphorus and oxygen indicates a phosphorus content of 4.433 g. What is the empirical formula of this compound

Methane and oxygen react to form carbon dioxide and water. what mass of water is formed if 0.80 g of methane reacts with 3.2 g of oxygen to produce 2.2 g of carbon dioxide?

A neutral atom has an atomic number of 20 and a mass number of 42. How many electrons does the atom have?

Why does the rate of a reaction generally increase with increased temperature? (Choose all that apply) A. at higher temperatures, molecules are more likely to collide with each other in the correct orientation. B.

What is the wavelength of microwaves of 3.0x109 Hz frequency? c = 3.0x108 m/sec

When DNA is condensing into a chromosome, what protein is it wrapped around?

How does tye transfer of energy affect physical and chemical properties of matter

According to valence bond theory, which kind of orbitals overlap to form the p-cl bonds in pcl5?