Scientific Notation
Matter
Sig Figs and Measurements
Sig Fig Math and Conversions
Density
Periodic Table
Atoms
Orbitals
100
Write this measurement in scientific notation:
0.00601 m
6.01 x 10-3 m
100
Is this sample an element or a compound:
an element, palladium
100
How many sig figs in this measurement?
0.04050 seconds
4, the 4050
100
Do this calculation and write the answer with the proper amount of sig figs and units:
56.050 g / 87.20 mL
0.6428 g/mL
100
Which sample is more dense? On the board
Sample A
100
Which element is in period 6, group 12?
Hg, mercury
100
How many protons in uranium?
92
100
Which orbital is this? On the board.
p orbital
200
Write this measurement in scientific notation:
8,457,100 hours
8.4571 x 106 hours
200
Is this sample an element or a compound:
a compound (with iron, nickel, cobalt, and sulfur atoms)
200
Round this measurement to 3 sig figs:
17,295 m
17,300 m
200
Do this calculation and write the answer with the proper amount of sig figs and units:
43.015 cm - 16.2 cm
26.8 cm
200
Calculate the density for an object with mass of 5.32 g and volume of 3.25 ml.
1.64 g/mL
200
Which group is barium in? (special name group)
alkaline earth metals (group 2)
200
How many electrons in a neutral atom of cadmium?
48
200
Which orbital requires more energy to be filled with electrons: 3s or 3d?
3d
300
Write this measurement in regular number format:
9.345 x 108 L
934,500,000 L
300
Is this sample a mixture or a pure substance:
a mixture
300
Round this measurement to 4 sig figs:
0.04796532871 g
0.04796 g
300
Do this calculation and write the answer with the proper amount of sig figs and units:
348.094 g / (187.210 mL - 146.40 mL)
8.530 g/mL
300
Calculate the density (with proper sig figs and units) for an object with:
mass of 3.4 g
initial water volume: 10.00 mL
final water volume: 13.80 mL
0.89 g/mL
300
What period and group is bismuth in?
period 6, group 15
300
How many neutrons in tungsten?
110
300
Which orbital requires more energy to be filled with electrons: 3d or 5s?
5s
400
Write this measurement in regular number format:
2.76 x 10-6 g
0.00000276 g
400
Classify this sample two different ways:
acceptable: mixture of atoms, solid, atoms, different elements
400
What volume of liquid is in this graduated cylinder? Report your answer with the proper amount of sig figs.
Each line is worth 2 mL, and it looks like it's right on the line before 180 mL so
178.0 mL
400
Hertz (Hz) = 1/seconds
Convert 341.25 Hz to 1/minute. Write your answer with the proper amount of sig figs.
341.25/s * (60 s)/(1min) = 20475 1/min
400
Calculate the density (with proper sig figs and units) for an object with:
mass of 23.145 g
initial water volume: 15.00 mL
final water volume: 23.25 mL
2.80 g/mL
400
What's the halogen in period 2?
fluorine
400
Which element has 20 neutrons, 20 electrons, and 20 protons?
calcium
400
How many orbitals total in energy level 3?
9
500
Write this measurement in scientific notation:
three hundred thousand four hundred minutes
three hundred thousand four hundred = 300,400
3.004 x 105 minutes
500
Classify this sample two different ways:
acceptable: element, pure substance, gas, molecule
500
Report the diameters of the quarter and penny, with the proper sig figs.
each line is worth 0.1 cm
quarter: 2.40 cm
glass bottle: 5.70 cm
500
1 mile = 1.60934 km
How many miles are in 127.35 hectometers? Report your answer with the proper amount of sig figs.
100 m = 1 hm and 1000 m = 1 km
127.35 hm * (100 m)/(1 hm) * (1 km)/(1000 m) = 12.735 km
12.735 km * (1 mil)/(1.60934 km) = 7.9132 mil
500
Which of these elements would react similarly to phosphorous?
a. silicon
b. nitrogen
c. chlorine
d. oxygen
b. nitrogen because they're in the same group (so have the same number of valence electrons)