Match the following vocabulary: 1. the change from a liquid state to a gaseous state boiling 2. the change from a gaseous state to a liquid state condensation 3. the change from a solid state to a liquid state deposition 4. the change from a liquid state to a solid freezing 5. the change from a solid state to a gaseous state melting 6. the change from a gaseous state to so solid phase change 7. a change of state sublimation

What is the mass of sodium in 3 moles of sodium chloride

What overall charge must all compounds have

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.