Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
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

Chem 209

QuestionAnswer
______ is a science that deals with materials and the changes of these materials. chemistry
A _____ made with any instrument requires an estimate. measurement
A _____ always has some degree of uncertainty. measurement
A measurement always consists of two parts: _____ & _____. a number & a unit
How many significant figures are in the number 6,407,000? 4
^15N and^15O are_____ isotopes
_____ can undergo chanWe often formulate general obseved behavior into a statement called a _____. natural law
_____ can undergo changes in both its physical and its chemical properties. matter
two cubes of the same size but different masses will have different _____ densities
A _____ ______ is used to convert the moles of starting substances to the moles of desired substance. mole ratio
any number can be expressed as a number between _____ and _____ and a power of 10 ( either positive or negative) . 1 and 10
_____ has mass and occupies space. matter
_____ reaction will always have water and carbon dioxide as products combustion
Mass Percent (%) [ mass of solute (part) divided by mass of solution (whole) ] x 100
Created by: FO