Significant Figures and Measurements

Question 1

Accuracy

Answer 1

Refers to the closeness of measurements to the correct or accepted value of the quantity measured

Question 2

Precision

Answer 2

Refers to the closeness of a set of measurements of the same quantity made in the same way

Question 3

Meniscus

Answer 3

The curve in measuring, where you always measure from

Question 4

Quantities VS. Units

Answer 4

What we measure VS. how we measure

Question 5

Balances

Answer 5

Measures in grams, the last estimated digit is already given

Question 6

Graduated Cylinder

Answer 6

Measures in milliliters, called graduated because it uses graduated lines

Question 7

Thermometer

Answer 7

Measures in celsius, in electronic thermometers the last estimated digit is already given

Question 8

Percent Error Formula

Answer 8

Experimental value - accepted value/accepted value = x100

Question 9

Precision VS. Smallest Mark

Answer 9

Includes your estimate VS. what the instrument measured

Question 10

Sig Fig Rule One

Answer 10

All non-zero digits are sig

Question 11

Sig Fig Rule Two

Answer 11

Sandwiched zeros are sig

Question 12

Sig Fig Rule Three

Answer 12

Leading/placeholder zeros (zeros to the left) are not sig

Question 13

Sig Fig Rule Four

Answer 13

Trailing zeros (zeros that come after last sig fig) count if a decimal is present

Question 14

Sig Fig Rule Five

Answer 14

Exact numbers may be thought of as having infinite sig figs

Question 15

Addition and Subtraction with Sig Figs

Answer 15

If the decimal is rounded to the ones, include a decimal place but no zero after

Question 16

Placeholder Zeros

Answer 16

Not significant when it comes to the certainty of a measurement, so can not be certain or estimated digit in a measurement

Question 17

Exact Numbers

Answer 17

No uncertainty in the value, counted or defined like conversion factors

Question 18

When a Number in Scientific Notation is Changed to Expanded

Answer 18

None of the added zeros are sig

Question 19

When a Number in Scientific Notation Contains a Significant Zero

Answer 19

The zero is sig

Question 20

Scientific Notation Exponents

Answer 20

Positive exponents mean move to right

Question 21

When You Divide With Units Squared

Answer 21

The units and squares go away

Question 22

Leading Zeros

Answer 22

Do not use past decimal place is not needed

Question 23

In Scientific Notation

Answer 23

All coefficient numbers are sig

Question 24

A Line Over a Zero

Answer 24

Indicates that it is the last sig

Question 25

Rounding to Sig Figs

Answer 25

Round like normally

Question 26

Adding and Subtracting

Answer 26

Decimals in answer equal least decimals in equation

Question 27

Multiplying and Dividing

Answer 27

Sig figs in answer equal least sig figs in equation

Question 28

Negative Exponent in Scientific Notation

Answer 28

Number smaller than one