Chemistry Unit 3

mega

mega

Which prefix has a symbol M, quantity 1,000,000, and exponent 10^6

kilo

Which prefix has symbol k, quantity 1,000, and exponent 10³

base

What has a quantity of one, exponent 10^0, and makes up the second word in a measurement? (ex: centiGRAM, milliMETER)

deci

Which prefix has symbol d, quantity 1/10, and exponent 10^ -1?

centi

Which prefix has symbol c, quantity 1/100, and exponent 10^ -2?

milli

Which prefix has symbol m, quantity 1/1000, and exponent 10^ -3?

micro

Which prefix has the symbol µ, quantity 1/1,000,000, and exponent 10^ -6?

nano

Which prefix has symbol n, quantity 1/1,000,000,000 and exponent 10^-9

pico

Which prefix has symbol p, quantity 1/1,000,000,000,000 and exponent 10^ -12

always

For significant digits, all non zero digits are (always, sometimes, or never) significant

volume—> mL or cm³

If you divide a sample’s mass by its density, what are the resulting units?

quantity

A ________ is something that has magnitude, size, or amount.

derived unit

SI base units can be combined to form ____ ____.

equivalence, conversion factor

To change from one unit to another, you much determine the appropriate ______ and _______ ____

always

For significant figures, the middle zero is (always, sometimes, or never) significant.

never

For significant figures, the leading zero is (always, sometimes, or never) significant.

sometimes

For significant figures, the trailing zero is (always, sometimes, or never) significant.

right

A trailing zero IS SIGNIFICANT when it is to the (left or right) of the decimal.

left

A trailing zero IS NOT SIGNIFICANT when it is to the (left or right) of the decimal.

accuracy

Getting closer to the correct answer (or goal)

precision

Consistency; clustering answers

A

This target is….

A. Accurate and precise

B. Precise

C. Accurate

D. Neither

C

This target is….

A. Accurate and precise

B. Precise

C. Accurate

D. Neither

B

This target is….

A. Accurate and precise

B. Precise

C. Accurate

D. Neither

D

This target is….

A. Accurate and precise

B. Precise

C. Accurate

D. Neither

Standard Deviation

measure of how spread out numbers are

square root

Standard Deviation is the _____ ____ of the variance

variance

The average of the squared differences from the Mean.

accepted value

The real answer

experimental value

What you get in the lab

error

Distance from real answer

dimensional analysis

A useful problem-solving technique that allows you to convert units

SI

The standardization of the metric system (The International System of Units)