NGSS
HS-PS1-8
3 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Environmental Science · Chapter 6 · Lesson 3
The safest source by the numbers, and the most feared.
Honors Chemistry · Chapter 5 · Lesson 3
Constant only when the reaction is first order.
Honors Chemistry · Chapter 8 · Lesson 5
A million times the energy, from a change in the nucleus.