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Thermochemistry Plus

Total questions: 88

Worksheet time: 4hrs 19mins

Name
Class
Date
1.

What does the symbol c mean in q=mcΔTq=mc\Delta T  ?

a)
mass
b)
specific heat
c)
change in temperature
d)
energy
2.

How do you calculate ΔT\Delta T  ?

a)
mass times specific heat
b)
by using a mole ratio
c)
final temperature minus initial temperature
d)
energy into a system minus energy out of a system
3.

Thermochemistry

a)

the study of heat changes that accompany chemical reactions and phase changes

b)

the law that states that energy cannot be created or destroyed but can be changed from one form to another

c)

the amount of heat needed to increase the temperature of an object exactly 1°C

d)

a process that absorbs heat from the surroundings

4.
Energy can not be created or destroyed, it can only be transferred refers to the....
a)
law of conservation of energy
b)
law of conservation of mass
c)
life facts
d)
law of conservation of chemistry
5.
A chemical reaction that absorbs heat from the surroundings is said to be __________ and has a __________ ΔH at constant pressure.
a)
endothermic; positive
b)
endothermic; negative
c)
exothermic; negative
d)
exothermic; positive
6.

Calorimeter

a)

a chemical process in which a fuel combines rapidly with oxygen to release energy and form products, often carbon dioxide and water

b)

any chemical or physical change accompanied by the release of heat.

c)

A device used to measure the quantity of heat energy released in a combustion reaction.

d)

the quantity of heat energy given off when a specified amount of a substance burns in oxygen.

7.

What term is given to a reaction which transfers heat energy to the surroundings?

a)

Endothermic

b)

Reversible

c)

Exothermic

d)

Exotermic

8.

Surroundings

a)

everything in the universe outside of the system

b)

a part of the universe on which you focus your attention

c)

The heat absorbed or released by a reaction at constant pressure

d)

an equation that includes the quantity of energy released or absorbed as heat during the reaction

9.

Heat

a)

Energy that flows from a hotter to a colder object

b)

Property of matter that determines the direction of heat flow

c)

Capacity to do work or supply heat

d)

the amount of heat necessary to raise the temperature of exactly one gram of water by one degree Celsius.

10.

calorie

a)

Energy that flows from a hotter to a colder object

b)

Property of matter that determines the direction of heat flow

c)

Capacity to do work or supply heat

d)

the amount of heat necessary to raise the temperature of exactly one gram of water by one degree Celsius.

11.

Energy

a)

Energy that flows from a hotter to a colder object

b)

Property of matter that determines the direction of heat flow

c)

Capacity to do work or supply heat

d)

the amount of heat necessary to raise the temperature of exactly one gram of water by one degree Celsius.

12.

Exothermic reaction is where heat is __________ to the surrounding

a)

taken in

b)

absord

c)

released

13.

Endothermic reaction is when the heat is _________________ from the surrounding

a)

taken in

b)

released

c)

taken out

14.
Heat flows from _______ to ______ objects
a)
cooler to warmer
b)
warmer to warmer
c)
warmer to cooler
d)
cooler to cooler
15.
Heat is measured in 
a)
joules
b)
grams
c)
degrees celcius
16.
Energy can not be created or destroyed, it can only be transferred refers to the....
a)
law of conservation of energy
b)
law of conservation of mass
c)
life facts
d)
law of conservation of chemistry
17.

Temperature is

a)

the kinetic energy of the entire system

b)

the average kinetic energy of the molecules

c)

the potential energy of the surroundings

d)

the kinetic and potential energy of the system

18.

The unit for measuring heat energy

a)

joule and calorie

b)

newton

c)

molecular weight

d)

atm

19.

The tool used to measure the average kinetic energy of molecules

a)

thermometer

b)

calorimeter

c)

specific heat capacitor

20.

A calorie is the amount of energy needed to raise 1 _______ of water 1 _______ celsius.

a)

gram, degree

b)

kilogram, 10

c)

pound, mass

d)

mass, thermo

21.

____________ is the part of the universe we are focusing on.

a)

System

b)

Surroundings

c)

Kinetic Energy

d)

Ionic Bonding

22.
a)
Periods
b)
Groups
23.
a)
Periods
b)
Groups
24.
a)
energy levels
b)
valence electrons
c)
protons
d)
neutrons
25.
a)
energy levels
b)
valence electrons
c)
protons
d)
neutrons
26.
a)
Same group
b)
Same period
27.
a)
Group 1
b)
Group 17
c)
Group 2
d)
Group 18
28.
a)
Group 1
b)
Group 17
c)
Group 18
d)
Group 2
29.
a)
Group 1
b)
Group 17
c)
Group 18
d)
Group 2
30.
a)
Metals
b)
Nonmetals
c)
Metalloids
31.
a)
Metals
b)
Nonmetals
c)
Metalloids
32.
a)
Metals
b)
Nonmetals
c)
Metalloids
33.
a)
Metals
b)
Nonmetals
c)
Metalloids
34.
a)
Metals
b)
Nonmetals
c)
Metalloids
35.
a)
Metals
b)
Nonmetals
c)
Metalloids
36.
a)
Metals
b)
Nonmetals
c)
Metalloids
37.
a)
Metals
b)
Nonmetals
c)
Metalloids
38.

Who invented the Periodic Table?

a)

Mendeleev

b)

Bohr

c)

Lewis

d)

Democritus

39.

What happens to the number of shells as you move down a group?

a)

They decrease by 1

b)

They increase by 1

c)

Nothing

40.

Valence means......

a)

inside

b)

outside

c)

full

41.

What do all elements in the same period have?

a)

same number of shells

b)

same number of electrons

c)

belong in the same family

42.
The majority of elements on the periodic table are
a)
man made.
b)
nonmetals.
c)
metals.
d)
gases.
43.
Name group 1A on the periodic table.
a)
alkali metals
b)
alkaline earth metals
c)
noble gases
noble gases
d)
halogens
44.
Name group 2A on the periodic table.
a)
alkali metals
b)
alkaline earth metals
c)
noble gases
d)
transition metals
45.
Name groups 3B - 12B on the periodic table.
a)
noble gases
b)
halogens
c)
metalloids
d)
transition metals
46.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
47.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
48.
Name group 18 on the periodic table.
a)
alkali metals
b)
alkaline earth metals
c)
transition metals
d)
noble gases
49.
Name group 17 on the periodic table.
a)
transition metals
b)
metalloids
c)
halogens
d)
alkali metals
50.
Electronegativity is...
a)
how good an atom is at attracting electrons
b)
the ability of an atom to lose electrons
c)
the energy required to remove an electron from a specific atom
d)
how easy it is to make friends. 
51.

Ionization energy is the energy needed to...

a)

remove an electron

b)

remove a proton

c)

gain an electron

d)

gain a proton

52.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)
the atoms have more mass.
b)
the atoms have less mass
c)
the atoms have more protons.
d)
the atoms have less electrons.
53.
Valence electrons are: 
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
d)
Electrons in the second shell
54.

Ionic compounds are formed between ________ and _________.

a)

metals and metals

b)

nonmetals and nonmetals

c)

metals and nonmetals

55.

In ionic compounds electrons are

a)

transferred

b)

shared

c)

lost

d)

no clue

56.
A charged particle that has gained or lost electrons is called a _____.
a)
molecule
b)
ion
c)
isotope
d)
element
57.
If I gain electrons I become
a)
Positive because I've added to my atom
b)
negative because I've added electrons
c)
same because i'm balanced
d)
equal because now I have electrons
58.
Metals tend to 
a)
gain electrons
b)
lose electrons
59.
Nonmetals tend to 
a)
gain electrons
b)
lose electrons
60.

A mole is a

a)

molecule

b)

602 hexillion, a unit of measurement

c)

a dozen

d)

I was not paying attention

61.

6.02e23 is referred to as

a)

Avogadro's number

b)

6.02 scientific notation

c)

Dalton's Postulate

d)

Mendelev's number

62.

How big is 6.02 hexillion of jelly beans

a)

big as the classroom

b)

big as earth

c)

big as moon

d)

big as Tascosa

63.

This subatomic particle has a positive charge.

a)

Proton

b)

Neutron

c)

Electron

64.

The subatomic particle holds the atom together.

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

65.

The subatomic particles found in the nucleus.

a)

Electron, Neutron

b)

Proton, Neutron

c)

Electron, Proton

d)

Proton, Neutron, Electron

66.

The subatomic particle that identifies the element.

a)

Proton

b)

Positron

c)

Neutron

d)

Electron

67.

In a stable element the number of _____________ equals the number of ______________.

a)

protons, electrons

b)

neutrons, electrons

c)

protons, neutrons

68.

Bohr stated that _______ are found in shells orbiting the nucleus.

a)

Electrons

b)

Protons

c)

Neutrons

d)

Clouds

69.
a)
metric ruler
b)
Celsius thermometer
c)
graduated cylinders
d)
pan balances
70.

What is used to swirl, mix, or store chemicals?

a)

Beaker

b)

Flask

c)

Test Tube

d)

Graduated Cylinder

71.
This item is used to simply hold or approximately measure a liquid.
a)
beaker
b)
flask
c)
graduated cylinder
d)
test tube
72.

The base unit for measurement/ length in the metric system.

a)

Meter

b)

Liter

c)

Gram

d)

Inch

73.

The base unit for mass in the metric system.

a)

Gram

b)

Meter

c)

Liter

d)

Pound

74.

The base unit for volume in the metric system.

a)

Liter

b)

Meter

c)

Gallon

d)

Gram

75.

A covalent compound is between a ___________ and _________.

a)

metal metal

b)

metal nonmetal

c)

nonmetal nonmetal

d)

metalloid metal

76.

A piece of paper contains_______ of atoms.

a)

Hundreds

b)

Tens

c)

Millions

77.

Electrons in the outermost shell are called _______________.

a)

lost electrons

b)

neutral electrons

c)

reactive electrons

d)

valence electrons

78.

The modern periodic table is arranged by this subatomic particle.

a)

proton

b)

neutron

c)

electron

79.

Elements in a group react similarly because they have the same number of_______________.

a)

Protons

b)

Shells

c)

Valence Electrons

80.

How many valence electrons are in group 18?

a)

Full or 8

b)

Full or 1

c)

7

d)

18

81.

The subatomic particle that determines reactivity.

a)

Electron

b)

Proton

c)

Shell

d)

Neutron

82.

The first step in a mass to mass problem is to find

a)

Molar Mass

b)

Number of Moles

c)

The subscripts of the elements

d)

the mass ratios

83.

The second step in mass to mass problems to write down the

a)

Coefficients

b)

Ratios

c)

Molecular Average

d)

Gram Mole Average

84.

The third step in mass to mass problems is

a)

Molar Mass x Coefficient

b)

Grams x Grams

c)

Moles/Grams

d)

Moles x Moon Mass

85.

The fourth step in mass to mass problems is to find your

a)

Molecular Average

b)

Find the isotope weight

c)

Ratio by dividing the given by the total in step 3

d)

Molar Mass

86.

Atoms can be seen with your eye.

a)

True

b)

False

87.
The mass of an object ___________________________.
a)
changes, depending on where it is located
b)
changes randomly
c)
changes, depending on temperature
d)
does not change
88.

The gravitational pull on an object is its

a)

weight

b)

mass

c)

molarity

d)

volume

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