Which of the following shows the conservation of mass during cellular respiration? a. 3 c o2 + 3 h2 o + energy → 3 c6 h12 o6 + 3 o2 b. 6 c o2 + 6 h2 o + energy → c6 h12 o6 + 6 o2 c. c6 h12 o6 + 6 o2 → 6 c o2 + 6 h2 o + energy d. 6 h2 o + c6 h12 o6 → 6 o2 + energy

Match the atomic particles with their characteristics. 1. made of two protons and two neutrons neutron 2. similar to an electron; positive charge neutrino 3. orbits nucleus; negative charge positron 4. bundle of energy; zero charge proton 5. found in nucleus; positive charge meson 6. very unstable; +, -, or zero charge gamma 7. found in nucleus; zero charge electron 8. negative particle; negative charge beta 9. atomic energy converted to mass alpha

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

How do you know how many valence electrons an atom has?