Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
In a question, what does it mean by stock system? |
It means the system of names where the oxidation status is indicated by roman numerals, commonly in parentheses. |
|
|
What does the term acid refer to? |
A solution of the acid compound in water. |
|
|
When working with ions, how do you transform them into a chemical formula? |
You criss-cross the oxidation numbers. If the oxidation numbers are the same number, they cancel each other out. |
|
|
What are the nine rules of oxidation numbers? |
1.) pure elements are zero (neutral) 2.) The greater the electronegativity of an element, the higher the charge when an ion. 3.) F is always -1 4.) O is -2, but -1 ONLY in H2O2, O is +2 with metals 5.) H is +1, -1 with metals 6.) Sum of them must be 0 unless specified 7.) Polyatomic ion's number=the sum of all atoms involved 8.) applies to both covalent and ionic 9.) monatomic ions = their usual charge |
|
|
What is an empirical formula? |
It is the simplified version of a molecular formula. |
|
|
The molar mass is the same as |
the formula mass. |
|
|
How do you go from percent composition to the empirical formula? |
You change the percents to grams. Divide the grams by the element's molar mass. (May need to double) Divide all of that by the smallest number. |
|
|
How do you go from the empirical formula to the molecular formula? |
You find the mass of the e.f. You divide the molar mass (which will be given) by the mass of the e.f. You apply that number to the e.f. |
|
|
How do you go from molecular formula to empirical formula? |
Simplify. |
|
|
How do you go from molecular formula to percent composition? |
You find the mass of each element and divide each of those by the molar mass (the total mass of the compound). |
|
|
This is a really short study guide because it is all math. |
Have basic math comprehension skills and you are fine. |
|
|
Good luck. |
I believe in you. |
|
|
Hamster. |
|
|
|
Baby hedgehog |
|
|
|
Otter. |
|
