Why would a block of wood have more friction than a cube

What must happen in a chemical reaction? A. Energy is created B. Energy is transferred. C. Atoms are destroyed. D. Energy is destroyed

What is formed called when air masses with different characteristics meet

An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the nucleus?

Monosodium glutamate, known as MSG, is sometimes added to food to enhance flavor. Analysis determined this compound to be 35.5% C, 4.77% H, 8.29% N, 13.6% Na, and 37.9% O.

The graph shows the distribution of energy in the particles of two gas samples at different temperatures, T1 and T2. A, B, and C represent individual particles.

Is the water density higher than the aluminum density

How many moles of molecular oxygen (o2) are consumed in the complete combustion of one mole of pentane (c5h12) ?

A gas has a volume of 30 L at 105 kPa. What pressure is required to compress the gas to 21 L?

Using special equipment which layer of the sun atmosphere is visible during a total solar eclipse

The characteristic flame test colors of metal ions are due to atomic emission spectra. Duscuss the relationship between the absoption and emission of light and the factors responsible for flame test colors.