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1st Semester Final 12/14/22

Total questions: 81

Worksheet time: 44mins

Name
Class
Date
1.
How many significant figures does the following number have?
0.00345
a)
6
b)
5
c)
3
d)
Ambiguous: 3,4,5, or 6
2.
How many significant figures does the following number have: 100.00210
a)
7
b)
8
c)
10
d)
Ambiguous: 7 or 8
3.
How many sig figs are there?
100.00
a)
1
b)
3
c)
4
d)
5
4.
How many sig figs are there?
100000000
a)
1
b)
9
c)
10
5.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
6.
Which of the following is a positively charged subatomic particle found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
7.
What carries no charge 
a)
Neutrons
b)
Electrons
c)
Protons
8.
Which is the smallest?
a)
electron
b)
proton
c)
atom
d)
neutron 
9.

What is the atomic number of Barium, Ba? (enlarge the periodic table)

a)

20

b)

38

c)

56

d)

88

10.

How many protons are in a sodium atom, Na? (tap to enlarge the periodic table)

a)

Sodium has 1 proton.

b)

Sodium has 3 protons.

c)

Sodium has 11 protons

11.

What is the atomic number of Nickel? (enlarge the periodic table)

a)

110

b)

28

c)

46

d)

78

12.

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

a)

6

b)

10

c)

4

d)

8

13.

Atoms of the same element which have a different number of neutrons are called _________________.

a)

ions

b)

isotopes

c)

quarks

d)

molecules

14.

Who was the first person to come up with the Atomic Theory which included four parts.

a)

John Dalton

b)

Democritus

c)

Ernest Rutherford

d)

Niels Bohr

15.
Who discovered that the nucleus contains positively charged particles called protons?
a)
Ernest Rutherford
b)
James Chadwick
c)
Democritus
d)
Niels Bohr
16.
Who discovered the electron?
a)
Niels Bohr
b)
Democritus
c)
Joseph Thomson
d)
John Dalton
17.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
18.

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

a)

Democritus

b)

Thomson

c)

Bohr

d)

Dalton

19.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

20.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

21.

Which of the following elements is an alkali metal?

a)

calcium

b)

magnesium

c)

mercury

d)

sodium

22.

In Mendeleev's periodic table, elements in each column had similar

a)

atomic masses.

b)

properties.

c)

atomic numbers.

d)

symbols.

23.

Each column of the periodic table is

a)

an element.

b)

a group.

c)

an isotope.

d)

a period.

24.

Most elements are

a)

metals.

b)

nonmetals.

c)

metalloids.

d)

semiconductors.

25.
Which group of the periodic table is composed of inert (not reactive)  gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
26.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
27.
Which is the correct formula for:
one carbon (C)
two oxygen (O)
a)
CO2
b)
CO
c)
C2O
d)
2CO
28.
What is Fe2O3
(rust) made up of?
a)
1 flourine, 2 einsteinium,
3 oxygen
b)
2 fluorine, 3 oxygen
c)
2 iron, 3 oxygen
d)
2 iron, 3 osmium
29.
How many electrons do atoms need to be stable?
a)
1
b)
2
c)
6
d)
8
30.

Which metal is found in period 3 and group 2?

a)

Boron

b)

Magnesium

c)

Aluminum

d)

Neon

31.

Which group of elements have full energy levels and are considered stable?

a)

Halogens

b)

Alkaline Earth Metals

c)

Alkali Metals

d)

Noble gases

32.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
33.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
34.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
35.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
36.
What is incorrect about this orbital diagram?
a)
Both arrows in the 2p box should be pointing up
b)
There is nothing incorrect with this diagram
c)
In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
37.
All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Core Notation
38.

Which shows the correct orbital diagram for Cobalt?

a)
b)
c)
d)
39.

Which of the following is the orbital notation for oxygen?

a)
b)
c)
d)
40.

Refer to the periodic table. Which element has the highest electronegativity?

a)

carbon

b)

lithium

c)

fluorine

d)

oxygen

41.

How many valence electrons does sulfur have?

a)

2

b)

4

c)

6

d)

8

42.

What is ionization energy?

a)

the energy required to move an electron from an atom

b)

measure of the attraction that an atom has for the electrons it shares in a molecule

c)

half the distance between the nuclei of identical atoms that are bonded together

d)

same thing as electron configuration

43.

Electronegativity generally ______________ across a period and _________down a group.

a)

increases, decreases

b)

decreases, increases

c)

stays the same, decreases

d)

increases, stays the same

44.

Ionization energy generally ________ as you go across the PT from left to right.

a)

stays the same

b)

decreases

c)

increases

d)

fluctuates wildly

45.

The correct name for CaBr2 is

a)

calcium dibromide

b)

calcium (II) bromide

c)

calcium bromide

d)

carbon bromide

46.

The name of the compound Mg3(PO4)2 is

a)

magnesium phosphate

b)

magnesium phosphite

c)

trimagnesium diphosphate

d)

magnesium (III) phosphate

47.

The formula for aluminum acetate is

a)

Al(Ac)3

b)

Al(C2H3O2)3

c)

AlC2H3O2

d)

Al3C2H3O2

48.

The chemical formula for manganese (VII) sulfite is

a)

Mn2(SO4)7

b)

Mn7(SO4)2

c)

Mn2S7

d)

Mn2(SO3)7

49.

The formula for barium hydroxide is

a)

BaOH

b)

Ba(OH)2

c)

BaO

d)

BaH2

50.
What is the NAME of...
CrN
a)
chromium (II) nitride
b)
chromium (III) nitride
c)
chromium nitride
d)
chromium (I) nitride
51.
What is the FORMULA for...
calcium arsenide
a)
Ca3As2
b)
CaAs2
c)
Ca3As
d)
Ca3Ar2
52.
What is the FORMULA for....
beryllium iodide
a)
Be2I
b)
BeI
c)
BeI2
d)
BI2
53.
The chemical formula of sodium sulfate is
a)
S₂SO₄
b)
NaSO₂
c)
NaSO₄
d)
Na₂SO₄
54.

Compounds composed of a ______________ and _____________ like the compound CaCl2 , are ionic compounds.

a)

metal ... metal

b)

nonmetal ... nonmetal

c)

metal ... nonmetal

55.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons 
c)
The transfer of electrons
d)
None Of the above
56.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

57.

What two types of atoms make a covalent bond?

a)

2 Nonmetals

b)

1 Nonmetal and 1 Metal

c)

2 Metals

d)

2 Noble Gases

58.

Which of the following elements will form a cation?

a)

Arsenic

b)

Copper

c)

Bromine

d)

Fluorine

59.

Which of the following will form an anion?

a)

Titanium

b)

Iron

c)

Calcium

d)

Sulfur

60.

Which of the following will form a cation?

a)

Barium

b)

Phosphorous

c)

Tellurium

d)

Selenium

61.

Which of the following elements will form an anion?

a)

Calcium

b)

Cobalt

c)

Nickel

d)

Iodine

62.

Cations

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

63.

Anions

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

64.

An ion is

a)

Also a compound

b)

An atom that has gained or lost an electron

c)

An atom that has only gained electrons

d)

An atom where the number of protons=electrons

65.
What geometry will this molecular structure have?: H2S
a)
bent
b)
tetrahedral
c)
linear
d)
trigonal pyramidal
66.

What two types of atoms make a covalent bond?

a)

2 Nonmetals

b)

1 Nonmetal and 1 Metal

c)

2 Metals

d)

2 Noble Gases

67.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
68.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
69.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Linear
70.
Choose the correct shape for this molecule:
a)
Bent
b)
Trigonal pyramidal
c)
Trigonal planar
d)
Linear
71.
Choose the correct shape for this molecule:
a)
Tetrahedral
b)
Trigonal pyramidal
c)
Bent
d)
Trigonal planar
72.

What is the correct shape of CHCl3?

a)

Bent

b)

Trigonal pyramidal

c)

Tetrahedral

d)

Trigonal planar

73.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
74.
According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?
a)
Pairs of valence electrons
b)
Inner shell electrons
c)
Mobile Electrons
d)
Electrons closest to the nucleus
75.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
76.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
77.

What are valence electrons?

a)

The innermost electrons

b)

The outermost electrons

78.

What is the octet rule?

a)

Elements can only have 8 electrons in its outermost shell

b)

The elements must form an octopus like structure

79.

How many valence electrons does Carbon have

a)

1

b)

4

80.

How many valence electrons does Argon have

a)

8

b)

11

81.

Which of the elements in the picture has correct electron dot notation?

a)

1

b)

2

c)

3

d)

4

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