Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 11 views

    Rules For Significant Figures: Ex. 123,000 Is To 1.23 X 10 Ex. 0.00123 Is To 1.23 X 10

    Uploaded by

    Clark Joshua
    Rules for significant figures dictate that: 1) Non-zero digits are always significant as are trailing zeros in decimal portions. 2) Zeros between non-zero digits, known as "trapped" zeros, are also significant. 3) Leading and trailing zeros are not significant unless they are decimal portions. Scientific notation is used to write very large or small numbers in a standardized way by moving the decimal point and using exponents of 10. Positive exponents move the decimal left and negative exponents move it right. The SI system of units includes standard units like meters, kilograms, seconds that are used internationally in science, technology, and medicine.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd

    Rules For Significant Figures: Ex. 123,000 Is To 1.23 X 10 Ex. 0.00123 Is To 1.23 X 10

    Uploaded by

    Clark Joshua
    11 views2 pages
    Rules for significant figures dictate that: 1) Non-zero digits are always significant as are trailing zeros in decimal portions. 2) Zeros between non-zero digits, known as "trapped" zeros, are also significant. 3) Leading and trailing zeros are not significant unless they are decimal portions. Scientific notation is used to write very large or small numbers in a standardized way by moving the decimal point and using exponents of 10. Positive exponents move the decimal left and negative exponents move it right. The SI system of units includes standard units like meters, kilograms, seconds that are used internationally in science, technology, and medicine.

    Original Description:

    Original Title

    GomezJosh.ChemistryAssign1

    Copyright

    © © All Rights Reserved

    Available Formats

    DOCX, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    Rules for significant figures dictate that: 1) Non-zero digits are always significant as are trailing zeros in decimal portions. 2) Zeros between non-zero digits, known as "trapped" zeros, are also significant. 3) Leading and trailing zeros are not significant unless they are decimal portions. Scientific notation is used to write very large or small numbers in a standardized way by moving the decimal point and using exponents of 10. Positive exponents move the decimal left and negative exponents move it right. The SI system of units includes standard units like meters, kilograms, seconds that are used internationally in science, technology, and medicine.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    11 views2 pages

    Rules For Significant Figures: Ex. 123,000 Is To 1.23 X 10 Ex. 0.00123 Is To 1.23 X 10

    Uploaded by

    Clark Joshua
    Rules for significant figures dictate that: 1) Non-zero digits are always significant as are trailing zeros in decimal portions. 2) Zeros between non-zero digits, known as "trapped" zeros, are also significant. 3) Leading and trailing zeros are not significant unless they are decimal portions. Scientific notation is used to write very large or small numbers in a standardized way by moving the decimal point and using exponents of 10. Positive exponents move the decimal left and negative exponents move it right. The SI system of units includes standard units like meters, kilograms, seconds that are used internationally in science, technology, and medicine.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 2

    Rules for Significant Figures

     Non-zero digits are always significant.


     A final zero or trailing zeros in the decimal portion only are significant.

     Zeros appearing between two non-zero digits (trapped zeros) are significant.
    Example: 101.12 has five significant figures: 1, 0, 1, 1, and 2.
     Leading zeros are not significant. Such example is 0.0064 has two
    significant figures which is 6 and 4.
     Trailing zeros (zeros after non-zero numbers) in a number without a decimal
    are generally not significant .
     Any numbers in scientific notation are considered significant. Such as 5.600
    x 10-4
    Scientific Notation
     Scientific notation is a way of expressing real numbers that are too large or
    too small to be conveniently written in decimal form.
     When the number is 10 or greater, the decimal point has to move to the
    left, and the power of 10 is positive.
    Ex. 123,000 is to 1.23 x 105
     When the number is smaller than 1, the decimal point has to move to the
    right, so the power of 10 is negative.
    Ex. 0.00123 is to 1.23 x 10-3

    Measurement in Chemistry
     The International System of Units (SI) is the metric system used in science,
    industry, and medicine.
    Units of the SI system
     The kilogram (kg), for mass
     The second (s), for time
     The kelvin (K), for temperature
     The ampere (A), for electric current
     The mole (mol), for the amount of a substance
     The candela (cd), for luminous intensity
     The meter (m), for distance

    Unit Name Unit Symbol Quantity Name Quantity


    length

    meter m Length l,x,r

    kilogram Kg Mass m

    second s Time t

    ampere A Electric current I

    kelvin K Thermodynamic T
    temperature

    candela cd Luminous intensity lv

    mole mol Amount of substance n

    You might also like