When an atom in a reactant loses electrons, what happens to its oxidation number?

A) its oxidation number decreases

B) its oxidation number doubles

C) its oxidation number increases

D) its oxidation number stays the same

Blocks on the periodic table are formed by elements that have the same atomic mass. True or False

Determine if the following statements are true or false. If a statement is false correct it so that it is true. a. in nature the direction of the transfer heat energy is always from a hotter object to colder object b.

Which statement about carbon dioxide (CO2) is correct? a. it is a nonpolar molecule with nonpolar bonds. b. It is a nonpolar molecule with polar bonds. c. No right choice.

Which of the following became a major drawback to using ice blocks for cooling food?

In this redox reaction identify the reducing agent 2MgO-> 2Mg+O2

How much heat (in kJ) is evolved in converting 1.00 mol of steam at 160.0∘C to ice at - 50.0∘C? The heat capacity of steam is 2.01 J/g⋅∘C and of ice is 2.09 J/g⋅∘C.

When a polar molecule causes a charge redistribution in a nonpolar molecule, what are the molecules of the mixture most likely experiencing?

How many moles are in 458 grams of Na2SO4

What are the types of radioactive rays that can be produced during a radioactive decay?

Why is it important that acids and bases have different properties?