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Walton's Final Exam 2019

Total questions: 90

Worksheet time: 2hrs 2mins

Name
Class
Date
1.

What is the metric unit for mass?

a)

Meters

b)

Liters

c)

Grams

2.

Which one is not a metric unit?

a)

Celcius

b)

Yard

c)

Meter

3.

Which instrument would you use to accurately measure volume?

a)

Beaker

b)

Graduated cylinder

c)

Electronic balance

4.

The average length of an eyelash is 10 __

a)

mm

b)

cm

c)

km

5.

A piece of copper has a mass of 89g and a volume of 10 cm3. What would be the density of the copper?

a)

0.89 g/cm3

b)

890 g/cm3

c)

8.9 g/cm3

6.

What is the volume of 15 grams of lead?

a)

170cm3

b)

1.33 cm3

c)

.075 cm3

7.

How close a measurement is to the true value is called..

a)

Accuracy

b)

Precision

c)

Significant

8.

Evaluate the accuracy and precision of Data Set 3.

a)

The data is accurate

b)

The data is precise

c)

The data both precise and accurate

9.

Which of the following represents a compound?

a)

N2

b)
c)

H-O-H

10.

A smallest particle that can represent an element is _________

a)

a molecule

b)

an atom

c)

either a molecule or an atom

11.

Which of the following is a mixture?

a)

Both Air and Steel

b)

Air

c)

Steel

12.

Which of the following is a chemical property of mercury?

a)

Both reactivity and solubility are chemical properties.

b)

It reacts with oxygen

c)

It dissolves gold

13.

Which of the following is an indicator of a chemical reaction?

a)

Metal heating up in your hand.

b)

Bubbles forming in boiling water

c)

Silverware turning from silver to black.

14.

Which statement correctly describes this image?

a)

It contains two different elements

b)

It represents a mixture of two compounds

c)

It represents a compound of two elements

15.

Which of these is a property of metals?

a)

It's malleable

b)

It can't conduct electricity

c)

It's very brittle

16.

A student is given a sample of an unknown substance. He is asked to determine if it is classified as a metal, a metalloid, or a nonmetal. He discovered that the unknown element conducted some heat and electricity, had a shiny luster, and broke easily. This element is most likely a

a)

metal

b)

nonmetal

c)

metalloid

17.

Which group of elements have the most stable, nonreactive elements (will not bond with others)?

a)

Alkali metals

b)

Halogens

c)

Noble gases

18.

Most of the elements are considered to be these.

a)

Gases

b)

Metalloids

c)

Metals

19.

Elements in the middle of the periodic table are known as ___

a)

Alkaline Earth Metals

b)

Transition Metals

c)

Halogens

20.

All elements in the same group have the same number of ___.

a)

electron levels

b)

neutrons

c)

valence electrons

21.

Which element is located in Period 4 Group 6?

a)

Germanium

b)

Cerium

c)

Chromium

22.

Which particle determines the nuclear stability of an isotope?

a)

Protons

b)

Neutrons

c)

Electrons

23.

Which particles determines the mass number of an isotope?

a)

Electrons and Protons

b)

Protons and Neutrons

c)

Neutrons and Electrons

24.

How many neutrons does an atom of Nitrogen-13 have?

a)

7

b)

6

c)

13

25.

How many protons does an atom of this isotope have?

a)

17

b)

36

c)

19

26.

Which of the following is NOT a particle emitted from a nucleus of an unstable atom?

a)
b)
c)
27.

Which nuclear process is shown in the picture?

a)

fission

b)

fusion

c)

beta decay

28.

Balance the following equation:

146C --> 0-1e + ________

a)

145B

b)

146C

c)

147N

29.

Which type of compounds are created by the sharing of valence electrons?

a)

Covalent compounds

b)

Ionic compounds

c)

Metallic compounds

30.

Why do atoms form compounds?

a)

They are lonely

b)

They have full electrons levels

c)

They want full electrons levels

31.

Which of the following elements forms ions with a (2+) charge?

a)

Magnesium

b)

Sodium

c)

Oxygen

32.

Group 13 elements form____ ions

a)

3-

b)

7-

c)

3+

33.

The chemical formula for Aluminum sulfate is

a)

Al2(SO4)3

b)

Al2S3

c)

AlSO4

34.

Name the following compound: CaCl2

a)

calcium dichloride

b)

calcium chloride

c)

calcium (II) chloride

35.

Choose the correct chemical name for the formula, CuS

a)

copper(+2)sulfide

b)

copper sulfate

c)

copper(+1)sulfide

36.

What formula results when K+ and O2- ions bond?

a)

KO

b)

K2O

c)

KO2.

37.

How many atoms of oxygen are in Al2(CO2)3 ?

a)

3

b)

6

c)

5

38.

How many TOTAL atoms are in the compound NO3?

a)

4

b)

6

c)

2

39.

How many atoms of aluminum are on each side of the following equation:

4Al + 3O2 --> 2Al2 O3

a)

2

b)

6

c)

4

40.

Which is the correct chemical equation for this reaction?

a)

2 N + 6 H → 2NH6

b)

N2 + 3 H2 → 2 NH3

c)

N2 + H6 → N2H3

41.

Balance this equation.

_CF4 + _Br2 -- _CBr4 + _F2

a)

2,1,2,1

b)

1,2,2,1

c)

1,2,1,2

42.

Magnesium reacts with water to produce magnesium hydroxide and hydrogen gas.


Which of the following shows the balanced chemical equation for this reaction?

a)

Mg + H2O → MgOH +2 H

b)

Mg + 2H2O → Mg(OH)2 + H2

c)

2 Mg + H2O → MgOH2 + H2

43.

The substances listed on the left side of a chemical equation are the

a)

Products

b)

Coefficients

c)

Reactants

44.

What is the molar mass of Magnesium?

a)

24.31 g/mol

b)

12 g/mol

c)

24.00 g/mol

45.

What is the molar mass of ammonium sulfide - (NH4)2S?

a)

68.17 g/mol

b)

40.02 g/mol

c)

54.16 g/mol

46.

What is the molar mass of table salt (NaCl)?

a)

116.88 g/mol

b)

35.45 g/mol

c)

58.44 g/mol

47.

What is the percent composition by mass of sulfur in the compound MgSO4 ?

a)

44.3%

b)

26.6%

c)

32.1%

48.

The simplest whole-number ratio of moles of elements in the compound.

a)

Condensed formula

b)

Empirical formula

c)

Structural formula

49.

The following reaction is an example of what reaction type?

CoCO3 → CoO + CO2

a)

Synthesis

b)

Decomposition

c)

Single Replacement

50.

The following represents what reaction type? AB + CD →AD + CB

a)

Double Replacement

b)

Single Replacement

c)

Synthesis

51.

The following reaction is an example of what reaction type?

Cu + 2Ag(NO3) → 2Ag + Cu(NO3)

a)

Synthesis Reaction

b)

Double Displacement Reaction

c)

Single Displacement Reaction

52.

Which statement is FALSE about this chemical reaction?

a)

2 moles of hydrogen molecules will react with 1 mole of oxygen molecules.

b)

2 grams of hydrogen will react with 1 gram of oxygen.

c)

For every 2 moles of hydrogen molecules that react, 2 moles of water molecules will be produced.

53.

Using the following equation:

Fe2O3 + 3H2 → 2Fe + 3H2O

How many moles of iron can be made from 6 moles of hydrogen molecules?

a)

4 moles Fe

b)

6 moles Fe

c)

2 moles Fe

54.

Which unit is a mole similar to?

a)

dozen

b)

grams

c)

meters

55.

According to the following equation, how many grams of water could be created by combusting 100.5 g of ethane?

2 C2H6+ 5 O2-> 4 CO2+ 6H2O

a)

180.6 g H2O

b)

108.1 g H2O

c)

201.2 gH2O

56.

Hydrocarbons are compounds that contain

a)

Carbon and Nitrogen

b)

Carbon and Hydrogen

c)

Carbon, Oxygen, and Hydrogen

57.

Name this alkane

a)

Methane

b)

Ethane

c)

Hexane

58.

Which of the following contains a triple bond?

a)

C2H6

b)

C2H2

c)

CH3

59.

Which of the following contains only carbon and hydrogen atoms?

a)

alcohols

b)

alkenes

c)

aldehydes

60.

What is the IUPAC name of C4H10?

a)

Decane

b)

Hexane

c)

Butane

61.

What is the correct name for this compound?

a)

2-methylhexane

b)

2-monoheptane

c)

1-methylheptane

62.

Which of the following is NOT an isomer of this molecule?

a)
b)

2-methylpentane

c)

C6H12

63.

How many valence electrons does carbon have?

a)

2

b)

4

c)

6

64.

How many covalent bonds do oxygen atoms form?

a)

1

b)

2

c)

3

65.

Which element can only form a single bond with an atom?

a)

Carbon

b)

Hydrogen

c)

Nitrogen

66.
The Law of Conservation of Energy states:
a)
Energy can created or destroyed but not transformed 
b)
Energy cannot be created or destroyed, it can only transformed
c)
Energy can't be created, destroyed or transformed
67.

The source of the Sun's energy is ....

a)

Nuclear energy

b)

Gravitational energy

c)

Mechanical energy

68.

Chemical energy is located in ....

a)

the nucleus of an atom.

b)

the covalent bonds of a molecule.

c)

Both A and B

69.

What does a plant convert light energy into?

a)

radiant energy

b)

gravitational energy

c)

chemical energy

70.

Energy is needed to ....

a)

form bonds

b)

break bonds

c)

break and form bonds

71.

Temperature is a measure of average______energy of individual atoms.

a)

kinetic

b)

elastic

c)

chemical

72.

As 120 g of copper piping heated to a temperature of 120.50C cools to 50.80C . How much heat did the copper lose in the process?

a)

3220 J

b)

69.7 0C

c)

8364 J/0C

73.

Which is an example of an endothermic change?

a)

Ice melting

b)

Combustion

c)

Steam condensing

74.

Which of the following is a diatomic element?

a)

Hydrogen

b)

Helium

c)

Argon

75.

According to the bond energy table, _____________________ when a mole of water is formed from its individual atoms.

a)

934 kJ is lost

b)

899 kJ is gained

c)

864 kJ is gained

76.

A gas at a volume of 4 liters is at a pressure of 2 atm. The volume is changed to 16 Liters, what must the new pressure be?

a)

2 atm

b)

12 atm

c)

0.5 atm

77.

10 L of a gas is collected at 100 K and allowed to expand to 30.0 L. What is the new temperature?

a)

400 K

b)

300 K

c)

275 K

78.

Solids are described as having a

a)

definite shape and indefinite volume

b)

indefinite shape and indefinite volume

c)

definite shape and definite volume

79.

What happens when you heat a gas?

a)

It gains mass.

b)

It loses mass.

c)

It increases in volume.

80.

This image demonstrates the property of ______________.A property both liquids and gases exhibit.

a)

Effusion

b)

Fluidity

c)

Diffusion

81.

Which factor does NOT affect the volume of a gas?

a)

what gas it is. (Ex. Oxygen vs. Nitrogen)

b)

the size of the container

c)

the number of gas particles

82.

When 0.250 moles of a gas is placed in a container at 25 °C, it exerts a pressure of 700 mm Hg. What is the volume of the container?

a)

0.557 Liters

b)

6.64 Liters

c)

8.74 Liters

83.

If an alkane has 10 carbon atoms, how many hydrogen atoms will it have?

a)

10

b)

20

c)

22

84.

What is the molecular formula for this molecule?

a)

C8H18

b)

CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3

c)
d)
85.

What type of solar radiation gets absorbed by greenhouse gases?

a)

Sunlight

b)

Ultraviolet

c)

Infrared

86.

What is the most abundant gas in our atmosphere?

a)

Oxygen

b)

Carbon dioxide

c)

Nitrogen

87.

Which of the following is NOT part of solar radiation that reaches the Earth?

a)

Infrared radiation

b)

Ultraviolet radiation

c)

Gamma radiation

88.

Without the greenhouse effect the Earth would ...

a)

have no atmosphere

b)

be very cold

c)

be very hot

89.

What does this picture represent?

a)

solid

b)

liquid

c)

gas

90.

To determine if a chemical reaction would occur between a metal and an ionic compound, you should...

a)

calculate the energy change

b)

refer to an activity series

c)

use the band of stability

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