Would you classify silicon as a compound or as an element? Explain your answer your answer

At STP which element is brittle and not a condulctor of electricity? A) S B) K C) Na D) Ar

322 l of hydrogen occupies volume of 197 l at stp. what was the initial pressure exerted on the hydrogen constant

Select the correct answer. Which equation, when solved, gives 8 for the value of x?

What happens to the air particles in the bubble when you pull up on the plunger

What are the products in the chemical equation for the overall process of photosynthesis?

What is the thermochemical equation for the combustion of methane. Methane formula: CH4 (g) and the deltaH comb - 891 (kJ/mol)

What is the mass of one mole of an element that has aan atomic mass of 6.94?

Zhang is designing protective packaging. He tests his design by dropping a raw egg protected by his packaging from various heights. He finds that the egg is protected up to a height of 11 meters.

An element with a single electron in its highest energy level is probably

Chemical bonds are likely to form when A. two atoms have the same number of electrons. B. an atom's outer energy level doesn't have the maximum number of electrons. C. an atom's nucleus has the same number of protons as neutrons. D.