measurements

Question 1

Accuracy is

Accepted Answer

how close a measurement is to the accepted value.

Question 2

Report the answer to the following calculation to the correct number of sig figs: 254.84 g - 75.14 g.

Accepted Answer

179.70 g

Question 3

Which of the following groups was the most accurate?

Accepted Answer

group 3

Question 4

How many significant figures are in 0.00084030 m?

Accepted Answer

5

Question 5

Convert 2385 J to MJ.

Accepted Answer

0.002385 MJ

Question 6

Convert 2374.3 into proper scientific notation.

Accepted Answer

2.3743x103

Question 7

Which of the following groups was most precise?

Accepted Answer

group 1

Question 8

Convert 4.67x10-4 into "normal" notation.

Accepted Answer

0.000467

Question 9

What does SI stand for?

Accepted Answer

System International

Question 10

According to the graph, what voltage would give a current of 0.08 A?

Accepted Answer

2.7 V

Question 11

Energy is

Accepted Answer

the capacity to do work or produce heat.

Question 12

The SI unit for mass is the

Accepted Answer

kg

Question 13

Convert 11.5 mm to m

Accepted Answer

0.0115 m

Question 14

Report the answer to the following calculation to the correct number of sig figs: 2.75x102 m÷ 400.0 s.

Accepted Answer

0.688 m/s

Question 15

Convert 155 K to oC.

Accepted Answer

-118 oC

Question 16

The SI unit for temperature is

Accepted Answer

K

Question 17

Precision is

Accepted Answer

how close repeated measurements are to each other.

Question 18

Significant figures are

Accepted Answer

all of the known digits plus one estimated digit.

Question 19

The SI unit for amount of substance (by counting) is the

Accepted Answer

mole

Question 20

What is the % error if the measured value is 13.4 g/mL and the accepted value is 13.6 g/mL?

Accepted Answer

1.47 %

Question 21

How many significant figures are in 20 students?

Accepted Answer

infinite

Question 22

Convert 12.4 μs to ms

Accepted Answer

0.0124 ms

Question 23

Which variable is observed or measured during an experiment?

Accepted Answer

dependent

measurements

Questions 23

measurements

Questions 23