Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chemistry Chap 7

Section 4 Determining Chemical Formulas

QuestionAnswer
A chemical formua that shows the composition of a compound in terms of the relative numbers and kinds of atoms in the simplest ratio Empirical Formula
An empirical formula consists of the Symbols for the elements combined, with subscripts showing the smallest whole-number mole ratio of teh diferent atoms in the compound
For an ionic compound, the formula unit is usually The compounds empirical formula.
Because of rounding or experimental error, a compound's mole ratio sometimes consist of numbers close to whole numbers instead of exact whole numbers
Empirical formula contains the smallest possible whole numbers that describe the atomic ratio
The actual formula of a molecular formula molecular formula
The relationship between a compound's empirical formula adn its molecular formula is written x(empirical formula) = molecular formula
In the molecular formula, the x represents a whole-number multiple indicating teh factor by which the subscripts in teh empirical formula must be multiplied to obtain teh molecular formula.
A compound composed of two different elements. Binary compound
The sum of the average atomic masses of all atoms represented in the formula of any molecule, formula unit, or ion. Formula mass
An ion formed from a single atom monatomic ion
A naming system nomenclature
The number of electrons that must be added to or removed from an atom in a combined state to convert the atom into the elemental form. oxidation number
The condition of an atom expressed by the number of electrons that the atom needs to reach its elemental form. oxidation state
a polyatomic io that contains oxygen Oxyanion
The percentage by mass of each element in a compound percentage composition
An ionic compound that forms when a metal atom or a positive radical replaces the hydrogen of an acid salt
A compound is found to contain 63.52% iron and 36.48% sulfur. Find the empirical formula FeS
Find teh empirical formula of a compound found to contain 26.56% potassium, 35.41% chromium, and the remainder oxygen. K2Cr2O7
Analysis of 20.0 g of a compound containing only calcium and bromine indicates that 4.00 g of calcium are present. What is the empirical formula of the compound formed CaBr2
Created by: tbstinso
Popular Chemistry sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards