Explain why the first ionization energy K is less than that of Ca

What is this mass in pounds? (1lb=453.6g)

What does temperature measure? O A. Pressure within molecules O B. Kinetic energy within molecules O C. Degrees within molecules O D. Potential energy within molecules

Why does the temperature not change during a phase change? There is a change from potential energy to kinetic energy. Changes in potential energy do not result in temperature changes No one really knows.

An atom has 5 protons and 7 neutrons. What is its mass number of amu?

A chemistry student is given 600. mL of a clear aqueous solution at 27.° C. He is told an unknown amount of a certain compound X is dissolved in the solution. The student allows the solution to cool to 27.° C. The solution remains clear.

Which of these answers best describe a fossil?

What kind of reaction is S (s) + O₂ (g) →SO₂ (g)

How many dots would a lewis dot structure for neon have?

Does a chemical bond join atoms together in a water molecule?

Does the arrangement of particles stay the same from one state to another?