For the following multiple choice questions choose the best answer (2 points each): 1. The three fundamental particles of the atom are
a. Nucleus, protons and neutrons
b. Positrons, quarks and neutrinos
c. Protons, neutrons and electrons
d. Positrons, quarks and anti-neutrinos

What diagram shows the ionic compound of magnesium oxide

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon