2. viscosity density buoyancy pressure 0.97 g/cm3 1.00 g/cm3 0.93 g/cm3
Lower density substances float on higher density substances.
Pressure decreases as altitude increases.
Buoyancy increases when density increases and decreases when surface area increases.
0.97 g/cm3
1.00 g/cm3
0.93 g/cm3

3. alcohol
ice
water
The mass is 144 g

6. protons and neutrons
electrons
neutral

7. ion
isotope
average mass

9. +1 +2 +3 -3 -2 -1
metals
nonmetals
fluorine
protons

11. ionic bonds
covalent bonds
metallic bonds

12. NH4Cl (NH4)2S (NH4)2CO3 Sodium bromide Sodium hydroxide
Sodium phosphate
NH4Cl
(NH4)2S
(NH4)2CO3

13. chemical
physical
chemical

14. Dissolving, melting, boiling, phase change, dyeing, cutting, filtering, separating, mixing
Burning, gas formation, precipitate formation, rusting, corroding, tarnishing, bleaching, digesting, exploding

15. changes with heat and pressure
melting, compaction, cementation, weathering, erosion, deposition, crystalliztion

17. equal
equal 2 6 2 3
Zn3 (PO4)2
1184 g

20. universal solvent
polarity
dissolve

23. dissolves
solution
increased
increased
increased
increased
increased
increased

24. 50 g
NH4Cl

27. electrolytic behaviorpH
acid
base
electrolytic behavior
reactivity

28. electrolyte
acids
bases
salts
strong
weak
strong acids
strong bases

31. Good Luck!