Density
A 5ml sample of water has a mass of 24g. What is the density of water?
4.8 g/mL
Express the number 700 in scientific notation
7 x 102
How many centimeters are in a meter?
100 cm
When you convert from a small unit to a large unit, what happens to the number of units?
It decreases.
Determine the number of significant figures in the measurement of 508.0 L
4
The closeness of a measurement to its true value is a measure of its ____.
What is accuracy?
What is the volume of a sample that has a mass 26.9g and a density 13.4 g/cm3
2.01 cm3
Express the following number in scientific notation 0.000000076
7.6 x 10-8
How many milliseconds are in 0.129 hectoseconds
12,900 seconds
Define the SI units for length, mass, time, volume, and temperature.
length: meter; mass: kilogram; time: second; volume: liters temperature: kelvin or Celsius
Determine the number of significant figures in each measurement 1.0200 x 105 kg
5
The closeness of a set of measurements to each other is it's ________
What is precision or preciseness?
Define the SI units for length, mass, time, and temperature.
length: meter; mass: kilogram; time: second; temperature: kelvin
Express the quantity in regular notation along with its appropriate unit. 3.60 x 105 s
360,000 s
Convert 4800 decigrams to kg.
0.48 kg
If you move the decimal place to the left to convert a number into scientific notation, will the power of ten be positive or negative?
positive
Round the number to four significant figures, and write the answer in scientific notation. 0.00054818 g
5.482 x 10-4g
The formula used to account for error
What is percent error?
What is the mass of a rock that dropped in a graduated cylinder with a initial volume of 40 and a final volume of 62mL. The density of the rock is 4.6 g/mL.
101.2 g
Solve the problem and express the answer in scientific notation. a. (5.8 x 10-5) + (3.4 x 10-5)
9.2 x 10-5
How many ounces are in 43.5 kg.
Conversion factors
1 kg = 2.2046 lbs and 1 lbs= 16oz
1534.40 ouncez
The accepted length of a steel pipe is 5.5 m. Calculate the percent error for this measurements: 5.2 m
5.5%
Add and subtract as indicated, and round when necessary. 258.3 kg + 257.11 kg + 253 kg
768 kg
Organize from smallest to largest ( Hecto, micro, mega, kilo, milli)
What is micro, milli, hecto kilo, mega ?
Samples A, B, and C have masses of 80 g, 12 g, and 33 g and volumes of 20 mL, 4 cm3, and 11 mL, respectively. Which of the samples have the same density?
b and c
What the purpose of scientific notation?
To express really small and really large numbers
What is the temperature in farhenheight for 314.5 K
106.43 oF
Round the number to four significant figures, and write the answer in scientific notation: 2.0145 mL
2.014 x 100 ml or 2.014 ml
An experiment requires each student to use 8.5 cm of Mg ribbon. How many students can do the experiment if
there are 572 cm of Mg ribbon available?
67.2 ---- 63 students