Periodic Table
Which of the following is an alkaline earth metal: sodium, magnesium, aluminum?
Magnesium
Physical
Convert 132.17 K to C
-140.98 C (K= C + 273.15)
Round the following number to the correct significant figures indicated: 325.75635 (5)
TRUE/FALSE: An electron in the 4s has less energy than an electron in the 4p.
TRUE
What are the number of neutrons in the nucleus of a bromine atom that has the mass number of 80?
45 neutrons
Is freezing water a physical or chemical change?
Physical
Convert 68.72 F to K
293.55K (C= (F-32)/1.8 --> K= C + 273.15)
What is 36.27 x 200 rounded to the correct number of significant digits?
7000
What are the possible values of l when n = 2?
0,1
There are four isotopes of sulfur: 32S, 33S, 34S, and 35S. Based
upon the atomic mass listed in the periodic table, which isotope is
the most abundant?
32S
Is a blueberry muffin an element, compound, heterogenous mixture, or homogenous mixture?
Heterogenous mixture
Convert 2.4 x 1013 g to ng
2.4 x 1022
What is (32.567 + 9.07) x 17 rounded to the correct number of significant digits?
710
Given an electron in the 3p orbital, what are the possible values of n, l, ml?
n = 3, l=1, ml= -1,0,1
What is the charge on a fluoride anion?
-1
Is gasoline an element, compound, heterogenous mixture, or homogenous mixture?
Convert 132.45 km to mm
132,450,000 mm or 1.32 x 108 mm
What is the mass of a sample of copper, if it displaces 9.58 mL of water? (Density = 8.96g/cm3)
85.8 g
Write the electron configuration for tin.
1s22s22p63s23p63d104s24p64d105s25p2
Write the isotopic symbol for the sodium isotope with 12 neutrons.
Mass Number (A) = 23 Atomic Number (Z)= 11
Is oxygen an element, compound, heterogenous mixture, or homogenous mixture?
Convert 1.72 x 1017 ns to ms
1.72 x 1011
A graduated cylinder contains 53.55 mL of water and rises to 67.95 mL of water when an object is placed into it. What is the mass of the object when the density is known to be 2.85 g/mL?
41.01 g
Write the abbreviated electron configuration for bromine.
[Ar] 4s23d104p5