Chem
How many distance of base in g,m,l
0
12 in scientific notation
1.2 × 10
.00012 in scientific notation
1.2 × 10 (-4)
How many distance of base in ug
10 (-6) = 0.000001
How many distance of base in nanogram (ng)
10 (-9) = 0.000000001
How many distance of base in kg
10 (3) = 1000
1um to nm
1000 nm
1 kg to g
1000g
1cm3 to mL
1mL
8 in scientific notation
8 × 10 (0)
987,653,000,000
9.87653 × 10 (11)
In scientific notation, a number is written as the product of two numbers
Coefficient of 10 raise to a power
What are significant digits?
Consist of all the digits known with certainly plus one final digit, which is uncertain
2nd step to write a number in scientific notation
Count how many places the decimal have to move
When dividing number written in scientific notation
Divide the numerator by the denometer and subtract the exponent
To add or subtract numbers written in scientific notation, you must
Express them with the same power of ten
Scientific notation is used to
Express very large and very small number so that problem solving will be made easier
The coefficient must be a number
Greater than or equal 1 and smaller than 10
The exponent indicates
How many times the coefficient must be multiplied by 10 to equal the original number of 4500
4th step to write a number in scientific notation
If the decimal have to be move to the left, the exponent is positive
3rd step to write a number in scientific notation
If the decimal have to be move to the right, the exponent is negative
What was the order of prefix name?
Kg,Hg,Dg,g,dg,cg,mg,ug,ng,pg,fg
1 step to write a number in scientific notation
Move the decimal to the right of the first non zero number
When multiplying numbers written in scientific notation
Multiply the first factor and add the exponent
If a number is less than 10, the exponent will be _______ and is equal to the number of places the decimal must be moved to the ______ to write the number in scientific notation
Negative, right
The last digit is still even if it is ________
Not certain
If a number is greater than 10, the exponent will be_______ and is equal to the number of places the decimal must be moved to the _____ to write the number in scientific notation
Positive, left
If a number contain no 0, all of the digits are _______
Significant
The last digit in a measurement is always
The uncertain digit
Microgram is
Ug