Which type of bond is formed from sharing electrons?

A: ionic salts

B: covalent molecules

C: metallic bonds

All of the following are indicators of chemical change except ... a. Change in color b. Production of a gas c. Formation of a precipitate d. All of the above are indicators of chemical change

An acid dissolved in water increases the concentration of

Which of the following describes an air mass with the symbol cT? a. it is a cold air mass over an ocean c. it is a warm air mass over an ocean b. it is a warm air mass over a continent d. it is a cold air mass over a continent

One reactant with a mass of 10 grams is combined with another reactant with a mass of 8 grams in a sealed container. After the reaction, what is the most reasonable prediction for the total mass of the products of this reaction?

Why is human skin purple when UV light is shined on it?

Which of these can be used to distinguish a mixture from a compound?

Which of the following is not sublimable? Dry ice Calcium chloride Ammonium chloride

Why are most household items made up of oxygen?

How many valence electrons does aluminum oxide have

How many grams of nh3 can be produced from 4.08 mol of n2 and excess h2. express your answer numerically in grams?