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22 Chem Fall Sem Exam

Total questions: 67

Worksheet time: 2hrs 42mins

Name
Class
Date
1.
Flammability (burns): Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
2.
Melting Point: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
3.

What is a chemical property of paper?

a)

Flammable

b)

White

c)

Light

4.

Is an ice cream cone melting a physical or chemical change?

a)

Physical

b)

Chemical

5.
Ice melting is an example of a
a)
physical change
b)
chemical change
c)
physical property
d)
chemical property
6.
Burning a marshmallow over a campfire
a)
Physical
b)
Chemical
7.
Reacts with Water: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
8.
What happens in ALL chemical changes?
a)
Change in state of matter
b)
A new substance is formed
c)
Bubbles are produced
d)
An explosion
9.
Is Gatorade powder dissolving in water physical or chemical change?
a)
Physical 
b)
Chemical
10.

Which of the following is not a clue that a chemical reaction has taken place?

a)

Changing size

b)

Changing color

c)

A gas being formed

d)

Formation of a precipitate

11.

what is digestion?

a)

physical property

b)

chemical change

c)

physical change

12.

N2 will form a covalent _____ bond

a)

triple

b)

double

c)

single

13.

Transition element Iron forms different ions:

Fe2 and Fe3.

[Fe]2+ and [Cl]- combine to form FeCl2.

The correct name is

a)

Fe (I) Chlorine

b)

Iron (II) Chloride

c)

Iron Dichloride

14.

Elements that have the same characteristics, # of valence electrons, and react similarly are grouped in the same

a)

family

b)

period

c)

class

15.

These two elements have the similar chemical properties and reactions

a)

Cl and F

b)

CL and S

c)

F and Ne

16.

Intensive and extensive properties are

a)

real estate proerties

b)

chemical properties

c)

physical properties

17.

Which property depends on the amount of the substance and therefore can change?

a)

intensive

b)

extensive

c)

both intensive and extensive

18.
a)

element

b)

homogenous mixture

c)

compound

d)

heterogeneous mixture

19.
a)

element

b)

homogenous mixture

c)

compound

d)

heterogeneous mixture

20.
a)

element

b)

homogenous mixture

c)

compound

d)

heterogeneous mixture

21.
a)

element

b)

homogenous mixture

c)

compound

d)

heterogeneous mixture

22.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

23.

What is the goal of the Lewis Dot Structure?

a)

To determine the electron position.

b)

To show the element's valence electrons & bonding capabilities.

c)

To find the atomic mass of an element.

d)

To search for the number of electrons in an individual atom.

24.

This is a correct dot diagram for nitrogen (N)

a)

true

b)

false

25.

This is a correct dot diagram for carbon (C)

a)

true

b)

false

26.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
27.

Why are sodium and chlorine attracted to each other?

a)

they have opposite charges

b)

they both have negative charges

c)

they both have positive charges

28.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
29.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
30.
An atom that has gained or lost electrons is called ...
a)
a winner
b)
an isotope
c)
an ion
d)
a loser
31.

Atomic radius increases moving _____ the family

a)

down

b)

up

c)

across

32.

Atomic radius decreases moving _____ the family

a)

down

b)

up

c)

across

33.

Elements in the same period have the same number of

a)

valence electrons

b)

atoms

c)

energy levels

34.

Atomic radius of atoms will increase as more ____ ____ are needed for their electrons.

a)

valence electrons

b)

atoms

c)

energy levels

35.

Which 3 things are always equal for an atom?

a)

Electrons, protons, and neutrons

b)

Atomic number, protons, electrons

c)

Mass number, atomic number, protons

d)

Atomic number, neutrons, electrons

36.

How many protons are in this element?

a)

12

b)

8

c)

7

d)

6

37.

What is the mass number for this element?

a)

12

b)

8

c)

7

d)

6

38.

How many neutrons are in this element?

a)

39

b)

19

c)

20

d)

40

39.

Which element does this model represent?

a)

Nitrogen

b)

Hydrogen

c)

Carbon

d)

Boron

40.

How many valence electrons does Nitrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

41.

USE THE PERIODIC TABLE

Find the element that has 3 Valence Electrons and 2 energy levels (hint: row 2)

a)

Magnesium - Mg

b)

Lithium - Li

c)

Aluminum - Al

d)

Boron - B

42.

USE THE PERIODIC TABLE

Find the element that has 5 Valence Electrons and 4 energy levels (hint: row 4).

a)

Arsenic - As

b)

Selenium - Se

c)

Calcium - Ca

d)

Vanadium - V

43.
What is the name of this element?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
44.

A model of orbiting electrons around a positive nucleus

a)

Bohr model

b)

Planck model

c)

Rutherford model

45.

The correct formula for calcium + chlorine is

a)

CaCl

b)

CaCl2

c)

Ca2Cl

46.

An ionic compound formula is written with the ______ first and the ____ second.

a)

metal

nonmetal

b)

nonmetal

metal

c)

metalloids only.

47.

The Roman numeral often seen when naming transition metals tells the

a)

charge (oxidation state) of the metal.

b)

number of metal atoms needed.

c)

group number.

48.

LiBr is called

a)

lithium bromine

b)

lithium (I) bromine

c)

lithium bromide

49.

When naming a compound, which of these is written first?

a)

Nonmetal

b)

Anion

c)

Cation

50.
How do the following two elements bond together?
Na1+  F1-         
a)

NaF

b)

Na3F

c)

Na1F2

51.

What is the charge of Cobalt (III)

a)

3+

b)

2+

c)

8+

52.

What is the charge and symbol for Lead (IV)

a)

Pb4+

b)

Ld4+

c)

Pb4-

53.

Which of these describes the arrangement of particles in a metal?

a)

Closely packed electrons with delocalised ions

b)

Alternating layers of metal ions and electrons

c)

Layers of metal ions surrounded by delocalised electrons

54.

Which of the following is NOT a property of a typical metal?

a)

Poor conductor of electricity

b)

High melting point

c)

Shiny

55.

Why do metals conduct electricity?

a)

They are shiny

b)

The electrons are delocalised and able to move

c)

The electrons are held tightly within the lattice

d)

The electrons are shared between two metal ions

56.

Which of these are considered properties of metals? (choose ALL that apply)

a)

brittleness

b)

low melting point

c)

luster (shininess)

d)

malleability

e)

ductility

57.
I can hit a metal with a hammer without the metal shattering because of its __________.
a)
Ductility
b)
Malleability
c)
Conductivity
d)
Lustrousness
58.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
59.

SO₃

a)

sulfate

b)

sulfur oxide

c)

sulfur trioxide

d)

monosulfur trioxide

60.

What is the OFFICIAL name for H2O? Hint.. This is a trick question so choose carefully!

a)

Hydrogen Oxide

b)

Oxygen Dinitride

c)

Water

d)

Dihydrogen Monoxide

61.
The covalent compound N2O5 would be named
a)
nitrogen oxide.
b)
dinitrogen oxide.
c)
nitrogen pentoxide.
d)
dinitrogen pentoxide.
62.
If copper (II) and phosphate bond together, the resulting chemical formula would be:
a)
Cu2(PO4)3
b)
CuPO4
c)
Cu3(PO4)2
d)
Cu3PO4
63.
The chemical compound for sodium phosphate would be:
a)
NaPO4
b)
Na2PO4
c)
Na3PO4
d)
Na(PO4)3
64.
Which is the correct lewis dot structure for calcium chloride?
a)
A
b)
B
c)
C
65.

Using the model for the formation of Scandium Fluoride (an ionic compound), write the chemical formula.

a)

Sc3F

b)

Sc3F3

c)

Sc+3F-1

d)

ScF3

66.

How many single bonding pair does NH3 share?

a)

1

b)

2

c)

3

67.

The picture demonstrates an ionic bond because

a)

Na transfers its valence electrons

b)

Na shares its valence electrons

c)

Na gains its valence electrons

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