The smallest unit of matter that can enter into chemical combination is a/an

An electrically neutral atom with an atomic number of 7 will have __ occupied electron shell(s). 

The only atom that has a nucleus with no neutrons is ______.

An atom of an element with 17 protons has ____ electrons in its first shell and _____ in its second shell and _____ in its third shell.

The three isotopes of carbon 12C (Carbon-12), 13C (Carbon-13), and 14C (Carbon-14) have different numbers of 

Aquatic living things are able to survive the winter thanks to which property of water?

Hydrogen bonds form when ____.

Find the indefinite integral. ∫xln⁡(x)dx{“version”:”1.1″,”math”:”\int x\ln(x)\, dx”}

Determine whether the improper integral converges or diverges by attempting to evaluate the integral. ∫1∞1x3dx{“version”:”1.1″,”math”:”\int_{1}^{\infty} \frac{1}{x^{3}} \, dx”}

Find the indefinite integral. ∫cos3⁡(x)sin6⁡(x)dx{“version”:”1.1″,”math”:”\int \cos^{3}(x)\sin^{6}(x)\, dx”}