Which of the following is not a characteristic of electromagnetic waves?

a. they can travel through a vacuum.

b. they can travel at various speeds through any one material.

c. they can be refracted.

d. they can be reflected.

Which of these changes do not involve forming or breaking chemical bonds? A. burning and melting B. rusting and cutting C. burning and digesting D. boiling and melting

What advantage does nuclear power have over fossil fuels?

Which of the following is type of bonding involves the complete transfer of a valence electron from a less electronegative atom to a more electronegative one?. a. ionic bonding. b. metallic bonding. c. covalent bonding. d. hydrogen bonding

Energy is released when the atoms of two elements bond together to form a compound compared to the total potential energy of atoms before bonding the total potental energy of the atoms after bonding is

If a gas with an odor is released in a room, it can quickly be detected across the room because it

Solid iron has a density of 7.9 g/cm3. Liquid mercury has a density of 13.6 g/cm3. will iron float or sink in mercury explain

Convert 6.42 moles of H2O to molecules

An aspirin tablet contains 81.0 mg of aspirin, which has the molecular formula, c9h8o4.

What size container do you need to hold 0.0459 mol of N2 gas at stp

What happens when two or more atoms react?