Which subatomic particle will you add or remove from an atom to create a new element

1 protons

2 neutrons

3 electrons

If two nonmetals with the same electronegativity bond, what type of bond will form? A. Metallic bond B. Non polar ionic bond C. Ionic bond D. Non polar covalent bond

Which of the following types of molecular representations can be used to show differences between isomers? Explain why each can or cannot. a) molecular formula b) structural formula c) 3D drawing or model,

What is the average kinetic energy of a gas at 285 kelvin? (R = 8.314 J/K-mol)

Which component of an item has the least mass A. protons B. electrons C. neutrons D. all are the same

Describe the three ways heat can be transferred-radiation, conduction, and convection

Which of the following processes includes all of the others? Group of answer choices transport of an ion down its electrochemical gradient osmosis passive transport facilitated diffusion

How is the Bohr atomic model different from the plum-pudding model? A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout. B. In Bohr's model, the atom's mass is mostly made up of electrons instead of protons.

What does the cell theory state? A. that cells come from other cells B. that cells come only from animals C. that cells cannot be created or destroyed

For which one of the following molecules is the indicated type of hybridization not appropriate for M the central atom? a. BeCl2 sp2 b. SiH4 sp3 c. BF3 sp2 d. C2H2 sp e. H2O sp3

P4O10 (s) = - 3110 kJ/mol H2O (l) = - 286 kJ/mol H3PO4 (s) = - 1279 kJ/mol Calculate the change in enthalpy for the following process: P4O10 (s) + 6H2O (l) → 4H3PO4 (s)