1. Explain with reasons why burning of paper is a chemical change.

You are looking at an atom that has the atomic number of 7 and an atomic mass of 16. how many neutrons are there in this atom?

Which is true about subatomic particles? A. Protons, neutrons, and electrons are the only subatomic particles. B. Subatomic particles are larger than atoms. C. All subatomic particles must have electrical charge. D.

How is copper extracted from sulphate ores

Which statement is true about electronegativity? A. The size of an atom and the number of valence electrons determine an atom's electronegativity. B. Electronegativity increases as the number of protons in an atom decreases. C.

For an amino acid such as aspartic acid, what impact would you expect a neighboring carboxylic acid to have on the apparent pKa value of the side chain?

Carbon disulfide burns in oxygen to yield carbon dioxide and sulfur dioxide according to the following chemical equation. CS2 (l) + 3O2 (g) → CO2 (g) + 2SO2 (g) a. If 1.00 mol CS2 reacts with 1.00 mol O2, identify the limiting reactant. b.

What is the meaning of monovalent?

What is a neutron and what charge does it have

Examples of mechanical and physical weathering in our neighborhoods

Balance the redox reaction KMNO4 + NH3 - --> KNO3 + MNO2 + KOH + H2O