chem terms

Which of the following is an extensive property of oxygen?

Mass

When J. J. Thomson discovered the electron, what physical property of the electron did he measure?

its charge-to-mass ratio, e/m

Millikan's oil-drop experiment

established the charge on an electron.

Polyatomic molecules contain

more than two atoms of the same or different type.

Which substance is present in the smallest proportion in a solution?

solute

A system which does work on the surroundings with no heat change (i.e., q = 0) has

w = ΔU.

Which of these is not a state function?

heat

What is defined as the distance between identical points on successive waves?

wavelength

is the wavelength associated with a moving particle.

The de Broglie wavelength

The Lewis dot symbol consists of the symbol for the element surrounded by dot(s). What does the symbol represent?

Nucleus and core electrons

Which is true concerning the dipole moment of a CO2 molecule?

The dipole moment is zero because the molecule is linear.

The electrons in the delocalized π molecular orbitals of benzene (C₆H₆)

are free to move around the six-membered ring.

The nitrosonium ion, NO+, forms a number of interesting complexes with nickel, cobalt, and iron. According to molecular orbital theory, which statement about NO+ is correct?

NO⁺ has a bond order of 3 and is diamagnetic.