BJU Physical Science chapter 19 (chemical reactions)

Reactions that break apart a substance are called

Zn+O ---->

the formula unit of an ionic compound is also an empirical formula

The stock system was developed in

oxidation numbers must always be positive

the oxidation number of a pure element is 4

When two compounds swap cations & anions with each other, you have

the oxidation number of a monatomic ion is equivalent to the charge of the ion

atoms with ____ electronegativity tend to gain electrons

When one element in a compound is replaced by another element you have........

the sum of the oxidation numbers of the atoms in a compound will equal 0

empirical formulas show.....

Reactions that produce thermal energy are called

oxidation numbers = the number of electrons that a bonded atom would gain or lose to be neutral

Reactions that combine two or more substances into a single, more complex compound are called

What happens if you where to alter a chemical formula to balance an equation?

Reactions that absorb thermal energy are called

elements in certain families regularly have the same oxidation numbers

In a chemical reaction, atoms are not created or destroyed.

analytical chemistry is ________

The name ending of the nonmetal in a binary compound changes to _______.