Show:
Surprise Me (% Error, Temp scale & Accuracy vs. Precision)
Density
Conversion Factors
Scientific Notation
Significant Figures
100
______ is a measure of how close a measurement comes to an actual or true value, while _______ is a measure of how close a series of measurements are to one another.
What is accuracy and precision?
100
A bar of silver has a mass of 68.0g and a volume of 6.48 cm^3. What is the density of silver?
What is 10.5 g/cm ^3
100
Convert 0.044 km to meters
What is 44m?
100
Express the number 700 in scientific notation.
What is 7 x 10^2?
100
0.05730 has _____ many significant figures.
What is 4?
200
The accepted length of a steel pipe is 5.5 m. Calculate the percent error for this measurements: 5.2 m
What is 5.5%?
200
What is the volume of a sample that has a mass of 20 g and a density of 4 g/mL?
What is 5 mL?
200
Convert 0.107g to centigrams.
What is 10.7 cg?
200
Express 0.000000076 in scientific notation
What is 7.6 x 10^-8
200
40.007 has _____ many significant figures.
What is 5?
300

“It was so cold yesterday that the temperature only reached 248 in Buffalo, New York.” Which temperature scale is being used? What would be the corresponding temperature on the other two scales?

The temperature scale being used is Kelvin 

(-13o F = -25o C = 248o K ) 

F =Fahrenheit

C= Celsius

K= Kelvin

300
Table sugar has a density of 1.59 g/cm^3. If a sugar cube has the dimensions of 1.2 cm by 1.5 cm by 1.3 cm, what is its mass?
What is 3.7206 g?
300
Convert 6.7 s to milliseconds.
What is 6,700 milliseconds?
300
Express the quantity in regular notation along with its appropriate unit. 3.60 x 10^5 s
What is 360,000 s?
300
0.020
What is 2?
400

“Today’s temperature of 49 in Los Angeles set a record high for the month of June.” Which temperature scale is being used? What would be the corresponding temperature on the other two scales?

Daily Double x2

The temperature scale being used is Celsius 

(49o C = 120.2o F = 322o K ) 

F =Fahrenheit

C= Celsius

K= Kelvin

400

Samples A, B, and C have masses of 80 g, 12 g, and 33 g and volumes of 20 mL, 4 cm^3, and 11 mL, respectively. Which of the samples have the same density?

What is B and C?

400
Convert 15 cm^3 to liters.
What is 0.0150 liters?
400
Solve the problem and express the answer in scientific notation. (5 x 10^-5) + (2 x 10^-5)
What is 7 x 10^-5?
400
Multiply 8.3 meters x 2.22 meters. Give your answer in the correct number of significant digits.
What is 18 m^2?
500

Daily Double

There were 42 questions on a test. Even the best student in the class got 40 correct. 

a) Write the equation for percent 

b) What was the best student’s percent error? 

[(Accept Value) - (Experimental Value) / (Accepted Value)] * 100 = 

[(42 - 40) / 42 ] * 100 =

[2/42] *100 = 4.76 % = 4.8%

500

A student fills a graduated cylinder with 10 ml of water. Knowing that the density of lead is 11.4 g/cm^3, and its mass is 4.0g, he predicts the height the water will rise after he drops the piece of lead into the water. The water will rise to ______ milliliters.

Daily Double

What is 10.35 ml?

500

The element silver melts at 960.8 C and boils at 2212 C. Express these temperatures in kelvins.

What is 1234 K (melting) and 2485 K (boiling)?

500
Solve the problem, and express the answer in scientific notation. (2 x 10^-4) x (3 x 10^2)
What is 6 x 10^-2?
500
Perform the following operation, and record your answer in the correct number of significant digits. 61.2 meters + 9.35 meters + 8.6 meters.
What is 79.2m?