Which of the following situations indicates an alpha emission? the atomic number increases by one, but the mass number does not change. the atomic number decreases by one, and the mass number decreases by one. the atomic number decreases by two, and the mass number decreases by four. the atomic number and the mass number both decrease by two.

Which terms are used to identify pure substances

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

What happens to the temperature of a substance when the average kinetic energy of its particles increases?