Q: Q: What is the term of a phase change if solid water has it's average kinetic energy increased to change it to liquid water? Choices: - boiling - freezing - evaporation - melting A:
A: melting

Q: Q: What are the gas giants mostly made of . Choices: - calcium and helium - nitrogen and helium - hydrogen and carbon - hydrogen and helium A:
A: hydrogen and helium

Q: Q: Vertebrates with four limbs are also called what? Choices: - Amphibians - Birds - Mammals - tetrapods A:
A: tetrapods

Q: Q: Neon, krypton and argon are examples of what kind of gases, which produce light by electroluminescence? Choices: - radiation gases - ionic gases - irradiation gases - halogen gases A:
A: halogen gases