Standard 2:
The student understands the basic principles of atomic theory. (SC.A.2.4)
1. knows that the number and configuration of elec-trons will equal the number of protons in an electrically
neutral atom and when an atom gains or loses electrons, the charge is unbalanced.
2. knows the difference between an element, a molecule, and a compound.
3. knows that a number of elements have heavier, unstable nuclei that decay, spontaneously giving
off smaller particles and waves that result in a small loss of mass and release a large amount of
energy.
4. knows that nuclear energy is released when small, light atoms are fused into heavier ones |
