Which information in the periodic table indicates the number of protons in an atom? A. the position of the element in its column B. the element's chemical symbol C. the element's atomic mass D. the element's atomic number

Identify the decomposition reaction. 2NH 3 + H 2SO 4 ⟶ (NH 4) 2SO 4 3Pb + 2H 3PO 4 ⟶ 3H 2 + Pb 3 (PO 4) 2 2 NO 2 ⟶ 2 O 2 + N 2 2NaBr + Ca (OH) 2 ⟶ CaBr 2 + 2NaOH

Name the following Cr (SO4) 2

Identify the term being defined. the force that keeps the nucleons bound inside the nucleus of an atom the amount of energy needed to split the nucleus into individual protons and neutrons the difference between the mass of the nucleons and the mass

Which soil layer is the least similar to the underlying rock

Based on the kinetic theory, which statement is true? A. Matter consists of only large molecules. B. Matter is made up of only charged particles. C. The particles of matter have zero kinetic energy and potential energy. D.

What are primary and secondary alkanols

Hydrogen is 99% hydrogen-1; 0.8% hydrogen-2; and 0.2% hydrogen-3. calculate it's average atomic mass

Uranium-235 has a half-life of 713 million years. Would uranium-235 or carbon-14 be more useful for dating a fossil from Precambrian Time? Explain.

Earth's oceans contain many dissolved elements like calcium, sodium, and chlorine. These elements plus several others combine to form the salts in the oceans.

What is physical change in chemistry?