1. To change any three variable equation
A= B × C
B= A ÷ C
C = A ÷ B

2. Density =
D = m ÷ v

3. Final volume – original volume V = Vf – V0
Water Displacement
Final volume – original volume V = Vf – V0

4. Converting ° C to Kelvin

5. Converting ° C to ° F

6. T is theoretical (real value) E is experimental (your value)
Percent error
T is theoretical (real value) E is experimental (your value)

7. Percent Yield

8. Speed
Distance ÷ Time

9. Acceleration
Speed ÷ Time

10. Force
Mass x Acceleration

11. Electricity
V = I x R R series = R1 + R2 + … 1/R parallel = 1/R1 + 1/R2 + … I = charge / time

12. Parts of the atom Protons = atomic number
Electrons = atomic number – charge
Neutrons = Atomic Mass – protons

13. Moles
Avogadro’s number = NA = x 10 23

14. (mass of part ÷ mass of the whole) × 100
Percent Composition
(mass of part ÷ mass of the whole) × 100

15. Molality = moles solute ÷ kg solvent
Solutions
Molality = moles solute ÷ kg solvent

16. Gas Laws

17. Specific Heat
q = m × c × ΔT

18. Energy
E = w + q

19. Work
Force × distance

20. Enthalpy

21. Entropy

22. Gibbs Free Energy

23. Colligative Properties

24. Rates

25. Half Life

26. Equilibrium

27. Acids and Bases

28. Waves