Periodic Table
What are the first two elements in the periodic table?
Hydrogen and Helium
How many meters are in 3 kilometers?
3000 m
How many sig figs are in 208.79142?
8
103 x 10-8
10-5
How many elements are in row two of the periodic table?
8
What is the atomic number for Sodium?
11
Convert 3917 mL into Liters.
3.917 L
15.61 + 13.3 =
28.9 (3 sig figs)
Express in standard notation:m 8.25 x 10-9
0.00000000825
True or False: an atom will always have the same number of protons and neutrons
False
What does the atomic number tell you?
The number of protons in an atomic nucleus!
Convert 231 cm into mm
2310 mm
0.7590 - 0.052 =
0.71
What is the scientific notation of 16600.87
1.660087 x 104
What is the value of a nanometer
x 10-9
Arrange in order from lowest to highest atomic number: Nitrogen, Oxygen, Carbon
Carbon, Nitrogen, Oxygen
Convert 3.14 x 103 meters into millimeters
3140 mm
63.9 m2 / 9.0s =
7.1 m2/s
(0.99 x 107) x (27.15 x 10-13) =
Express in scientific notation and with the correct number of significant figures
2.7 x 10-5
Convert 55553 mm to kilometers. Write the answer in scientific notation.
5.5553 x 10-2 km
What is the fifteenth element in the periodic table and its atomic symbol?
Phosphorus, P
Convert 5.7 THz (Tera Hertz) to GHz (Giga Hertz)
5700 GHz
72.003 x 22.10 =
1591
(9.54 x 10-4) / (1.150 x 10-8) =
Express in scientific notation and with the correct number of significant figures
8.29 x 104
Arrange the three elements in order of most to least protons: Argon, Helium, Neon, and Chlorine.
Argon, Chlorine, Neon, Helium