Chemistry FINAL study guide

21 terms by zebralizzy94

Create a new folder

Advertisement Upgrade to remove ads

Mendeleev left spaces in his periodic table and predicted the existence of three elements and their:

properties

The periodic law allows some properties of an element to be predicted based on its

positions in the periodic table

Elements in a group or column in the periodic table can be expected to have similar

properties

A horizontal row of blocks in the periodic table is called a

period

Bromine, atomic number 35, belongs to group 17. How many electrons does bromine have in its outermost energy level?

7

A negative ion is known as an

anion

In a row in the periodic table, as the atomic number increases, the atomic radius generally

decreases

Which is the best reason that the atomic radius generally increases with atomic number in each group of elements?

the number of occupied energy levels increases

Which branch of chemistry deals with the mass relationships of elements in compounds and the mass relationships among reactants and products in chemical reactions?

stoichiometry

The coefficients in a chemical equation represent the

The coefficients in a chemical equation represent the

a balanced chemical equation allows one to determine the

mole ration of any two substances in the reaction

A chemical equation is balanced when the

same number of each kind of atom appears in the reactants in the products

For the reaction represented by the equation Cl2+2KBr-->2KCl+Br2, calculate the percentage yield if 200 g of chlorine reacts with excess potassium bromide to produce 410. g of bromine?

91.0%

How many moles of ions are produced by the dissociation of 1 mol of MgCl2?

3 moles

How many moles of ions are produced by the dissociation of 1 mole of Al2(CO3)3?

5 moles

What is the right side of the equation for dissolving K2S(s)?

2K+(aq)+S2-(aq)

The formula for the hydronium ion is

H3O+

A water solution containing an unknown quantity of a noneelectrolyte solute has a freezing point of -0.21 degrees celsius. What is the molal concentration of the solution of Kf= -1.86 degrees celsiums/m?

0.11m

Electrolyes affect colligative properties differently than do nonelectrolyes because electrolyes

produce more moles of solute particles per mole of solute

A species that can react as either an acid or a base is an

amphoteric substance

A water solution whos pH is 10

is always basic

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set