Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Don't know
remaining cards
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:
restart all cards
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

Honors Chem Ch 2

Hypothesis A testable statement
Model An explanation of how phenomena occur and how data or events are related
Scientific Method A logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data
System A specefic portion of matter in a given region of space that has been selected for study during an experiment or observation
Theory A broad generalization that explains a body of facts or phenomena
Conversion Factor A ratio derived from the equality between two different units that can be used to convert from one unit to the other
Density The ratio of mass to volume or mass divided by volume
Quantity Something that has magnitude, size, or amount
SI The measurement system accepted worldwide
Volume The amount of space occupied by an object
Weight A measure of the gravitational pull on matter
Accuracy The closeness of measurements to the correct or accepted value of the quantity measured
Direct Proportion Two quantities that give a constant value when one is divided by the other
Inverse Proportion Two quantities that have a constant mathematical product
Percent Error A value calculated by subtracting the experimental value from the accepted value, dividing the difference by the accepted value, and then multiplying by 100
Precision The closeness of a set of measurements of the same quantity made in the same way
Scientific Notation numbers written in the form Mx10^n where the factor M is a number greater than or equal to 1 but less than 10 and n is a whole number
Significant Figure Any digit in a measurement that is known with certainty plus one final digit, which is somewhat uncertain or is estimated
Created by: kost