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