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Semester Exam Chemistry

Total questions: 48

Worksheet time: 24mins

Name
Class
Date
1.

A Steak is placed in a hot pan, the result is a form of a

a)

Chemical Change

b)

Physical Change

c)

Diffusion

d)

Burning

2.

An object changes from a solid to a gas. This process is called-

a)

Melting

b)

Vaporization

c)

Sublimation

d)

Deposition

3.

The Cylinder is sliced into 2 even pieces. What is the density of Piece A?

a)

4.5 g/cm3

b)

5 g/cm3

c)

9 g/cm3

d)

18 g/c3

4.

Of all the states of matter, this is one is the least compressible.

a)

Solid

b)

Liquid

c)

Gas

5.

A Student makes salad dressing by combining vegetable oil, vinegar, salt, pepper, mustard, and thyme. None of the ingredients are measured, and you can pick out the thyme if you want. The next time the student makes salad dressing, basil is used in place of the thyme. Which classification best describes the salad dressing?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

6.

Which of the following diagrams shows molecules in both the liquid phase and in the gas phase?

a)

A

b)

B

c)

C

d)

D

7.

Which Statement is correct about a sample of liquid water?

a)

It has a definite volume and a definite shape

b)

It has definite volume but no definite shape.

c)

It has no definite volume and no definite shape.

d)

It has no definite but has a definite shape.

8.

A team of students collects a sample of rainwater in a graduated cylinder. Which is the best estimate of the volume of the sample?

a)

36.0

b)

37.0

c)

43.0

d)

44.0

9.

When heat is added to a substance, the molecules in the substance

a)

Deflect the heat

b)

Move slower

c)

Pass the heat along

d)

Move Faster

10.

Which state of matter has the greatest amount of kinetic energy?

a)

Solid

b)

Liquid

c)

Gas

d)

Varies, depending on the substance

11.

A change in the state of matter from liquid to gas at boiling temperature is known as-

a)

Condensation

b)

Evaporation

c)

Vaporization

d)

Sublimation

12.

What is the mass of ethanol that exactly fills a 200 mL container. The density of ethanol is 0.789 g/mL

a)

.003945 g

b)

253.485 g

c)

157,800.0 g

d)

157.8 g

13.

The model of an atom is consistently undergoing changes. These changes are based on new information being found. Which model had the protons and the neutrons of the atom in the middle with the electrons orbiting around them with the ability to jump energy levels?

a)

Rutherford Model

b)

Planck Model

c)

Bohr Model

d)

Quantum Model

14.

An element is a solid at room temperature, has luster, is conductive and malleable. During experimentation, it is found to have various ionic forms sometimes possessing a 2+ charge and others a 3+ charge. This element is most likely found in which area of the periodic table?

a)

Alkali metal family

b)

Alkaline earth metal family

c)

Transition metals

d)

Halogen family

15.

Which particles are represented by the dots in Lewis valence e-dot structures?

a)

core electrons

b)

valence electrons

c)

protons

d)

all electrons

16.

Mendeleev organized his periodic table in order of increasing atomic-

a)

mass

b)

number

c)

radius

d)

stability

17.

What is the trend of Ionic Radius?

a)

Ionic radius increases from period 1 to period 7.

b)

Ionic radius decreases from period 1 to period 7.

c)

Ionic radius increases in cations and decreases in anions.

d)

Ionic radius decreases from group 1 to group 18.

18.

Determine the element according to the mass abundance data in the table.

a)

Aluminum

b)

Chromium

c)

Magnesium

d)

Sodium

19.

Which of the following is the correct Lewis dot diagram?

a)

A

b)

B

c)

C

d)

D

20.

Which family correctly represents the elements in Group 1 on the Periodic Table?

a)

Transition Metals

b)

Alkali Metal

c)

Lanthanide Elements

d)

Actinide Series

21.

Which statement correctly explains the composition of the nucleus of Rubidium-87?

a)

Rubidium-87 has 37 protons and 37 electrons

b)

Rubidium-87 has 37 protons and 37 neutrons

c)

Rubidium-87 has 37 protons and 50 electrons.

d)

Rubidium-87 has 37 protons and 50 neutrons

22.

Some Physical Properties of elements in a group of the period table are described below.

>Poor conductor of electricity

>Poor conductor of thermal energy

>Atoms contain seven valence electrons

>Brittle in the solid state

>Low melting points and boiling points

The elements described above belong to which group?

a)

Alkaline earth metals

b)

Noble gases

c)

Alkali metals

d)

Halogens

23.

Which of the following elements has the largest atomic radius?

a)

Calcium

b)

Sodium

c)

Potassium

d)

Magnesium

24.

Using the formula page, what is the wavelength of light with a frequency of 5.75 X 1015 s-1?

a)

5.21 x 10-7 m

b)

19.166 m

c)

1.73 x 1023 m

d)

2.34 x 1017 m

25.

Which of the following is the correct electron configuration for arsenic?

a)

1s22s22p63s23d64s23p104d3

b)

1s22s22p63s23p64s23d104p2

c)

1s22s22p63s23p64s23d104p3

d)

1s22s22p62d103s23p63d5

26.

How many double bonds are in the Lewis structure for carbon dioxide, CO2?

a)

three

b)

two

c)

one

d)

none

27.

What characteristic is responsible for the high electrical conductivity of a metal?

a)

Free-floating sea of electrons

b)

Strong bond between metallic ions

c)

Ions are displaced easily in the lattice

d)

Electrostatic attractive force between two atoms

28.

What is the correct chemical formula for a compound that is made up of Oxygen and Aluminum?

a)

O2Al3

b)

O3Al2

c)

Al3O2

d)

Al2O3

29.

Which of the following is a nonpolar covalent bond?

a)

F2

b)

CaO

c)

HF

d)

SO

30.

An Ionic bond would be a compound made up of which of the following elements?

a)

Carbon and Oxygen

b)

Phosphorous and Iodine

c)

Hydrogen and Chlorine

d)

Bromine and Aluminum

31.

Which of the following would NOT be considered a diatomic element?

a)

Nitrogen

b)

Chlorine

c)

Fluorine

d)

Boron

32.

A property of metals is the ability to be hammered and formed into particular shapes. This characteristic is called-

a)

Ductility

b)

Luster

c)

Malleability

d)

Conductivity

33.

After drawing the Lewis dot model, which molecule is nonpolar?

a)

H2Se

b)

BeH2

c)

PF3

d)

CHCl3

34.

Which of the following is not possible?

a)

SeCL5

b)

BrI4

c)

NBr5

d)

PF5

35.

How many lone pairs electrons are on the central atom of a NF3?

a)

0

b)

1

c)

2

36.

Based on their Lewis dot Diagram, which of the following elements is a metal?

a)
b)
c)
d)
37.

What is the correct name for the following compound? Li2S

a)

Dilithium monosulfide

b)

Lithium disulfide

c)

Sulfuric lithate

d)

Lithium sulfide

38.

What is the correct name for the following compound? Al2(SO4)Al_2\left(SO_4\right)_{ }  

a)

Dialuminum Trisulfate

b)

Aluminum Sulfate

c)

Aluminum Trisulfide

d)

Sulfuric Aluminate

39.

Which of the following compounds are correctly named?
NaOH-Sodium hydroxide

 Ca3P2Ca_3P_2 -Tricalcium Dophosphate
 Fe2O3Fe_2O_3  -Iron (II) Oxide
 NiBr2NiBr_2  -Nickle Bromide
SrS -Strontium Sulfide
 AlF3AlF_3  -Aluminum Trifluoride

a)

1 and 5

b)

1, 2, 3, and 5

c)

1, 3, 4, and 5

d)

1, 5, and 6

40.

What is the formula for the compound formed by Iron (II) ions and Chromate ions?

a)

Fe2(CrO4)3Fe_2\left(CrO_4\right)_3

b)

Fe(CrO4)2Fe\left(CrO_4\right)_2

c)

FeCrO4FeCrO_4

d)

Fe2CrO4Fe_2CrO_4

41.

What is the formula for Tin (IV) oxide?

a)

Tn4O2Tn_4O_2

b)

SnO2SnO_2

c)

Sn2O4Sn_2O_4

d)

TnO2TnO_2

42.

Students were asked to review the Safety Date Sheet for a chemical prior to beginning an investigation.

What is the formula for the substance (Product Name) listed on the Safety Data Sheet?

a)

Al(OH)3Al\left(OH\right)_3

b)

AlOH3AlOH_3

c)

AlHO3AlHO_3

d)

AlO3AlO_3

43.

Using the Nutrition Facts label above, which of the following formulas is correct for the highlighted ingredient? (Sodium Phosphate)

a)

Na2PO3Na_2PO_3

b)

NaPO

c)

Na3(PO4)2Na_3\left(PO_4\right)_2

d)

Na3PO4Na_3PO_4

44.

A student incorrectly states that the name for CuCl2 is Copper Chloride. Which of the following is the correct chemical name?

a)

Copper dichloride

b)

Monocopper Dichloride

c)

Copper I Chloride

d)

Copper II Chloride

45.

What is the charge for Iron in the chemical formulas FeO and Fe2O3. (In order) FeO then F203

a)

Both are +2

b)

+2 and +3

c)

+3 and +2

d)

both are +3

46.

 Fe(ClO4)3Fe\left(ClO_4\right)_3  is known as-

a)

Iron chlorite

b)

Iron III Chlorate

c)

Iron II perchlorate

d)

None of these

47.

The name for chemical formula PbS is -

a)

Lead Sulfide

b)

Lead IV sulfide

c)

Lead II sulfide

d)

Lead II Sulfate

48.

 Ni3PO4Ni_3PO_4  

What is the name of the compound?

a)

Nickel I Phosphide

b)

Nickel I Phosphate

c)

Nickel I Phosphite

d)

Nickel III Phosphate

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