When do elements absorb energy and enter an excited state?

What happens to starch at a molecular level when it is acted upon by amylase?

Sodium is an explosive metal. Chlorine is a poisonous gas. You would expect a compound made of sodium and chlorine to be very dangerous. very explosive and poisonous. very closely related to the element that makes up the majority of the compound.

What is the atomic number of carbon and the number of protons a) atomic number of 6 and 6 protons b) atomic number of 7 and 7 protons c) atomic number of 8 and 8 protons d) atomic number of 9 and 9 protons

Which formula represent sodium sulfate

The ability of an atom in a molecule to attract electrons is best quantified by the

Balance the equation _H2O2->_H2O+_O2

A balanced chemical reaction obeys the law of ... A) ideal gases. B) definite proportions. C) conservation of matter. D) conservation of energy.

What is the net ionic equation for the reaction between nickle (II) chloride and silver (I) nitrate?

What is the velocity of a wave with a wavelength of 0.03 m and a frequency of 120 Hz?

What is the gram atomic mass of sodium?