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

Chapter 3

Scientific Measurement

QuestionAnswer
What is measurement? a quantity that has a # and unit
What is accuracy? correctness
What is precision? repeatability
What is scientific notation? makes very small or large #s manageable, coefficient between 1-10.
Rules +/-: exponents must be the same x: add exponents division: subtract exponents
What are significant figures? in measurement all digits that are known plus the last digit
What determines if a digit is significant? Rules! 1. All nonzero digits are significant 2. All zeros between nonzero digits (sandwich zeros) are significant 3. Leading zeros are NOT significant 4. Trailing zeros: significant if there is a decimal in the # NOT significant, if there is no decimal
What is error? experimental value-accepted value
What is percent error? Error/accepted value x 100= __/100=_
What is SI? the metric system that was originally established in france
What are the base units? meter, kilogram, the kelvin, the second, and the mole
What determines if a digit is significant? Rules! 1. All nonzero digits are significant 2. All zeros between nonzero digits (sandwich zeros) are significant 3. Leading zeros are NOT significant 4. Trailing zeros: significant if there is a decimal in the # NOT significant, if there is no decimal
What is SI? the revised metric system that was originally established in france
What are the base units? meter, kilogram, the kelvin, the second, and the mole
What are the derived units? bass units are the foundation
What is mass? contrast with weight, which is amount of force due to gravity
What is volume? a derived unit; comes from a combination of units 1mL=1cm to the 3rd power (or cc)
What is weight? the amount of gravitational pull on an object
Kelvin conversion K=C+273 C=K-273
What is a conversion factor? a ratio of equivalent measurement, and is equal to 1
What is dimensional analysis? a way to analyze and solve a problem using the units (dimensions) of the measurement
What is density? the ratio of the mass of an object to its volume. Density=mass/volume
Created by: dwigmans13