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(Virtual Lab) Phase Changes

Pre-lab Questions

1. What are the four states of matter?

2. What terms do we use to name the phase changes, such as liquid to gas, gas to solid, gas to liquid, solid to gas, etc.?

3. Some people say "To change the states of matter, heat transfer must happen." Do you agree or disagree? Explain with examples.

4. What is entropy? How does the entropy of the system change along with the phase change from solid to liquid, and liquid to gas?

Developed nations tend to have better healthcare, greater wealth and more education. Because of these three factors, what can we also say about developed nations?

 

A. They have a higher life expectancy, lower crude birth rate, and lower total fertility rate

B. They have a lower life expectancy, higher crude birth rate, and higher total fertility rate

A to grow, thrive

B to remove or destroy

C dedicate something to a cause or activity