THE PERIODIC TABLE 2018

Multiple Choice

1.  The size of an element’s atomic radius __________ from left to right across the periodic table.

            a. increases                                                      b. decreases

            c. remains constant                                          d.  is randomly assigned

2.  Arrange the following elements from lowest to highest ionization energy:  Be, Mg, Ca, Rb, Sr

            a. Be, Mg, Ca, Rb, Sr                                      b. Rb, Sr, Ca, Be, Mg 

            c. Rb, Sr, Ca, Mg, Be                                      d.  Be, Mg, Ca, Sr, Rb

3.  The halogens tend to form anions because….

            a. They have low first ionization energies

            b. They have low electron affinities

            c. They have high electron affinities

            d. They don’t; they form cations

4.  Name the only element touching the stair-step line that is NOT a metalloid

            a. Aluminum                                                   b. Boron

            c. Nitrogen                                                      d.  Astatine

5.  When a metal atom becomes a cation…

           a. It gains an electron                                     

b. It becomes a different isotope

c. Its atomic number changes

d. Its ionic radius is smaller than its atomic radius

6.       What is NOT true of the element rubidium?

            a. It is an alkali metal                                      b.  It has one valence electron

            b. It has a low electron affinity                       d.  Its radius is larger than cesium’s

7.     In Al₂O₃, aluminum ion has a charge of...

a.    +2                                                             b. -2

c.    +3                                                             d. -3

8.     How many valence electrons does one atom of phosphorus have?    

a. 1                                                                  b. 5

c. 3                                                                  d. 7

9.  Arrange the following elements in order of increasing electron affinity:  Bi, As, P, N, Sb

            a. Bi, Sb, As, P, N                                           b.  N, P, As, Sb, Bi

            c. Bi, As, P, N, Sb                                           d.  N, As, P, Bi, Sb

10.  Of Fe, K, P, and Cl, which would you expect to have the greatest electron affinity?

            a. K                                                                 b. Fe

            c. Cl                                                                d. P

11.  Unknown element X has four energy levels, five valence electrons, and is a metalloid.  What is element X?

            a. Si                                                                 b. Ge

            c. Se                                                                d. As

12.  The second ionization energy of sodium is much higher than the first ionization energy because…

            a. The second electron is removed from an already-stable noble gas core

            b. The second electron is a valence electron

            c. The atom has a larger radius after the first electron is removed

            d. It’s not higher than the first ionization energy

13.  Boron and silicon form similar compounds and are very similar due to their ________ relationship

            a. periodic                                                        b. familial

            c. chemical                                                       d. group

14. An element with a greater effective nuclear charge has a(n) ______ atomic radius

            a. larger                                                            b. smaller

            c. undefined                                                     d. undulating

15. Lanthanides and actinides have these kinds of orbitals:

            a. s only                                                          b. s, p and d

            c. s, p, d, and f                                                d. f only

Answers: b, c, c, a, d, d, c, b, a, c, d, a, c, b, c

For Gas Law Reviewers ...

Please see December 2013 post. I am having difficulty uploading everything. I don't know why. It's supposed to be easy. Whatever.

GAS LAW WORKSHEET ANSWERS: December 2013 post

3rd quarter reviewer page 3

3rd quarter reviewer page 2

3rd quarter reviewer page 1

2nd Quarter Exam Reviewer with Answer Key

:) 

COUNTING SUBATOMIC PARTICLES 2018

Protons, Neutrons, and Electrons Practice Worksheet

Fill in the blanks in the following worksheet.  Please keep in mind that the isotope represented by each space may NOT be the most common isotope or the one closest in atomic mass to the value on the periodic table.

Atomic symbol	Atomic number	Protons	Neutrons	Electrons	Atomic mass
B			6
	11				24
		31	37
				39	89
	29		35
		43			100
Pb					207
			102	70
		89			225
Mo			53
	81				206
	100		159
No					261
Yb					172
		106	159

Solutions for the Protons, Neutrons, and Electrons Practice Worksheet:

Atomic symbol	Atomic number	Protons	Neutrons	Electrons	Atomic mass
B	5	5	6	5	11
Na	11	11	13	11	24
Ga	31	31	37	31	68
Y	39	39	50	39	89
Cu	29	29	35	29	64
Tc	43	43	57	43	100
Pb	82	82	125	82	207
Yb	70	70	102	70	172
Ac	89	89	136	89	225
Mo	42	42	53	42	95
Tl	81	81	125	81	206
Fm	100	100	159	100	259
No	102	102	159	102	261
Yb	70	70	101	70	172
Sg	106	106	159	106	265