Granite was formed slowly as magma cooled. What is the result of this slow cooling?

air pockets

large crystals

a smooth texture

fine grains

When coal or oil are burned, some part of it is completely combusted, forming co2; another part is partially combusted, forming co (carbon monoxide); and some remains unburned and is released as soot.

The number of atoms in a mole of any pure substance is called

What makes wind energy "green"? O A. It does not cost anything at all. O B. It does not require farming. O C. It does not work at night. O D. It does not require burning anything.

The pH of a vinegar solution is 4.15. What is the H + concentration of the solution

Which hypothesis led to discovery of the proton?

6. Which of the following statements correctly describes what happens to the diaphragm during an inhalation, when the lungs inflate? O A. The diaphragm returns to its resting state. O B. The diaphragm contracts and flattens. O C.

A column is filled with four different liquids of different densities. A red liquid, a blue liquid, a green liquid, and a purple liquid are all added into the column. This chart shows the densities of the liquids.

Metals are used in many products because of the characteristic properties that most metals have. Which product requires the high luster of metals in order to work?

Sodium is a silvery-white metal that reacts with chlorine gas, which is a yellow-greenish gas that is toxic. The reaction gives off a lot of heat.

Which of the following chemical reactions is an oxidation-reduction reaction? Answer WO3 + 3H2 W + 3H2O KNO3 + LiCl LiNO3 + KCl CaSO4 + 2NaCl Na2SO4 + CaCl2 Mg (NO3) 2 + 2HBr MgBr2 + 2HNO3 According to the collision theory and model created to