Most ceramics are opaque, whereas porcelains often have a translucent appearance. What could explain the translucent properties of many porcelain materials

Holly studied some soil at the bottom of a valley. The soil contained some roc from the top of a nearby mountain. Explain how the particles could become part of the soil.

Heat loss by radiation depends on temperature. if we double the temperature of an object the rate of heat loss by radiation increases by a factor of:

True or false? All four types of macromolecules always contain carbon (c), hydrogen (h), and oxygen (o), but not all of them contain nitrogen (n).

What is the best description of the Bohr model of the atom? A.) The atom consists of a positively charged material with negatively charged electrons embedded within it. B.) The atom consists of a nucleus with electrons orbiting randomly around it. C.

HCI + NaOH →? O NaCl + H20 O NaCl + CO2 + H20 O NaCl + H2

What type of reaction is 2 NO2 - --> 2 O2 + N2

The main source of phosphorous is in: rocks water plants the atmosphe

To what part of a plant does the stem sliver water and nutrients

You place a balloon in a closed chamber at STP. When the balloon doubles in size, what happens to the chamber pressure? A.) The pressure stays the same B.) The pressure doubles C.) The pressure reduced by one half

2K3N + 3CaCrO4 → Ca3N2 + 3K, CrO Give the formula for the second reactant: How many potassium atoms on the reactant side: How many oxygen atoms on the product side?