What are three main classifications of the elements

In a methane molecule (ch4), there are 4 single covalent bonds. in an octane molecule (c8h18), there are 25 single covalent bonds.

Differences between iron and steel

Select the correct statements below. a. An atom of chlorine is larger than sulfur because the addition of an electron increases the repulsions without an increase in attraction for the nucleus resulting in less screening. b.

Why is the protist kingdom sometimes called the odds and ends kingdom.

Which is a measure of how hot or cold something is?

In a closed system, the total heat given off by warmer substances equals the total heat energy gained by cooler substances (qwater = - qliquid).

What compound will not give oxygen on heating

Choose one property of water that makes it unique. Describe the property and explain the chemical or physical?

An object is dropped onto the moon (g m = 5 ft/s 2). how long does it take to fall from an elevation of 250 ft.?

Which type of luster gives the mineral the appearance of metal?