Which of the following places the elements in the correct order of increasing first ionization energy?

F, O, N

Si, P, S

Be, Mg, Ca

Li, Na, K

Why is it important to keep good records during a scientific investigation?

Specific gravity of an object is numerically equal to the? of the object.

The Law of Conservation of Matter states that matter cannot be created or a. enlarged B. changed C. broken D. destroyed

Predict what would happen if you touched the knob of a positively charged electroscope with a negatively charged object. Explain your prediction.

The pressure exerted on a 2.5L sample of hydrogen gas at a constant temperature is increased from 0.428 atm to 0.724. What will the final Volume be

What organelle is primarily used in respiration

Which of the following planetary objects have the most affect on Earth's tides? sun Mars moon Venus

Ionic compounds are formed by the ... of electrons? by the what?

What is it called when energy is created without oxygen?

If 21.3 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 297 Kelvin and 1.40 atmospheres? Show all of the work used to solve this problem. 2Li (s) + 2H2O (l) - > 2LiOH (aq) + H2 (g)