What type of physical change is it when a liquid turns into a solid and a solid turns into a liquid

Which of the following functions as a form of insulation and long term energy storage? A. Carbohydrates B. Nucleic acids C. Lipids D. Proteins

Do you expect potassium iodide to be soluble in cyclohexane

How many total atoms are in 0.220 g of p2o5?

Describe how NH3 and CF4 satisfies the octet for all atoms.

Suppose that instead of mixing water at different temperatures, you instead had two beakers of different liquids at the same temperature. In Beaker A, you have 70 mL of a blue liquid that has a mass of 45 grams.

What is most believed by most scientists about the age of our solar system.

The water level in a graduated cylinder stands at 20.0 ml before and at 26.2 ml after a 16.74 g metal sample is lowered into the cylinder. what is the density of the sample. what metal is the sample most likely to be

An electrolyte is a substance that will conduct electricity when dissolved in water. a substance that conducts electricity well is a strong electrolyte. a substance that conducts electricity poorly is a weak electrolyte.

Energy is required to produce a chemical change during (1) chromatography (2) electrolysis (3) boiling (4) melting

What is the definition of colorie