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Calorimetry

Total questions: 26

Worksheet time: 13mins

Name
Class
Date
1.

As an acid, what does HCl give up pretty easily?

a)

an electron

b)

a hydrogen ion

c)

a chlorine ion

d)

a neutron

2.

Sodium hydroxide, an extremely caustic substance, is more commonly known as ___

a)

battery acid

b)

stomach acid

c)

baking soda

d)

lye

3.

What kind of a reaction happens when an acid and a base are mixed?

a)

a decomposition reaction

b)

a synthesis reaction

c)

a neutralization reaction

d)

a combustion reaction

4.

Mixing concentrated acids and bases ___

a)

absorbs heat

b)

releases heat

c)

releases a gas

d)

absorbs moisture

5.

If they can, molecules will move toward a state of ___

a)

lower energy

b)

higher energy

c)

decay

d)

unrest

6.

The internal energy of the system plus the product of pressure and volume is called ___

a)

Gibbs free energy

b)

total energy

c)

entropy

d)

enthalpy

7.

At constant pressure, enthalpy works out to be exactly the same as ___

a)

the temperature of the surroundings

b)

the temperature of the system

c)

the heat that's absorbed or released by a reaction

d)

the volume of the system

8.

While hand-warmers use exothermic reactions, chemical ice packs for treating injuries are based on ___

a)

endothermic reactions

b)

isothermic reactions

c)

isobaric reactions

d)

hypothermic reactions

9.

How far the fuel in an airplane's tank will allow it to fly is based on the ability to calculate ___

a)

elevation

b)

change in enthalpy

c)

gravitational potential energy

d)

atmospheric pressure

10.

One of the ways we can calculate the change in enthalpy of a system is with ___

a)

Markovnikov's Rule

b)

The Haber Process

c)

Hess's Law

d)

Bernoulli's equation

11.

Hess's Law states that the total enthalpy change for a chemical reaction only depends on ___

a)

its initial state

b)

its final state

c)

its initial and final states

d)

the pathway it takes

12.

The science of measuring the change in heat associated with a chemical reaction is called ___

a)

spectroscopy

b)

calorimetry

c)

meteorology

d)

thermometry

13.

What scientific apparatus is basically an insulated container that contains a thermometer?

a)

a spectrometer

b)

a photometer

c)

a calorimeter

d)

a thermal regulator

14.

The chemicals in the calorimeter make up the thermodynamic system and everything else is ___

a)

an isolated system

b)

boundary conditions

c)

a closed system

d)

the surroundings

15.

In a calorimeter what instrument is usually used to track the temperature change?

a)

a calibrated balance

b)

a thermometer

c)

a graduated cylinder

d)

a digital hot plate

16.

Hank measured room temperature to be about ___

a)

11°C

b)

16°C

c)

21°C

d)

26°C

17.

Which toxic element was traditionally used in thermometers?

a)

mercury

b)

iodine

c)

fluorine

d)

calcium

18.

Which symbol is normally used to represent the heat change in a calorimeter?

a)

a lowercase "h"

b)

a lowercase "q"

c)

an uppercase "t"

d)

the Greek symbol "delta"

19.

The heat required to raise the temperature of one mass unit of a substance by 1 °C is called ___

a)

the gravimetric heat density

b)

specific density

c)

specific heat capacity

d)

the molar enthalpy

20.

Unlike with metals, to raise the temperature of water it requires a lot of ___

a)

specific heat capacity

b)

hydrogen bonds

c)

gravitational potential energy

d)

thermal energy

21.

The extremely high specific heat capacity of water is due to the breaking and formation of ___

a)

mercury thermometers

b)

hydrogen bonds

c)

covalent bonds

d)

ionic bonds

22.

The heat change of the reaction in the calorimeter was found using the equation ___

a)

ΔH = smΔT

b)

ΔT = smΔH

c)

q = sTΔm

d)

E = ½mv²

23.

Thermodynamics is the study of ___

a)

acids and bases

b)

neutralization reactions

c)

heat, energy, and work

d)

the spatial arrangements of atoms in molecules

24.

What is the specific heat capacity of water?

a)

1.184 Joules per gram degrees Celsius

b)

4.184 Joules per gram degrees Celsius

c)

8.184 grams per Joule degrees Celsius

d)

4.814 grams per Joule degrees Celsius

25.

The experimental calorimetry results were compared to the results using Hess's Law and ___

a)

the standard entropies of creation

b)

the common energies of formation

c)

the common enthalpies of creation

d)

the standard enthalpies of formation

26.

The greatest source of error in the calorimeter calculation was probably the use of ___

a)

a graduated cylinder instead of a burette

b)

a mercury thermometer instead of a digital one

c)

the specific heat capacity of pure water instead of the salt water

d)

impure chemicals