The formation of covalent chemical bonds is

a. thermoneutral.

b. exothermic.

c. endothermic.

d. slow

What soil particle size is the smallest?

The nucleus of an atom contains which subatomic particles? A) neutrons only B) protons and neutrons C) neutrons and electrons D) protons and electrons

A student needs to use the metric system while measuring the length of a box. Which units should he use? centimeters inches feet yards

Which is denser, a solid solution, a gaseous solution, or a liquid solution

A reaction occur when aqueous solutions of copper (II) chloride and barium hydroxide are combined. Write the net ionic equation, include states and charges.

How many moles are there in 545g of Fe2O3?

How are magic minerals different from Felsic minerals? A. Mafic minerals contains lower levels of iron and magnesium. B. Mafic minerals contain more dark-colored, high-density minerals C.

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal

What is done with the reactive sodium after the reaction to make sure the products are safe in an air bag?