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Category > Chemistry Posted 13 Feb 2024 My Price 8.00

Chemistry Principles EHS Unit 6 Quiz

Question 1

1 / 1 pts

In a chemical reaction, an __________ system is one in which heat or matter cannot be exchanged between the system and surroundings.

 

  closed 

  gaseous 

  isolated 

  open 

 

Question 2

1 / 1 pts

When two bodies with varying temperatures  transfer thermal energy, __________ is produced.

 

  pressure 

  graphite 

  heat 

  water 

 

Question 3

1 / 1 pts

A(n) __________ occurs in the mechanism of a reaction but not in the general balanced equation.

 

  intermediate 

  rate 

  product 

  reactant 

 

Question 4

1 / 1 pts

The step in a simple reaction that shows the progress of the reaction is called the __________ step

 

  sophomore 

  senior 

  freshman 

  elementary 

 

Question 5

1 / 1 pts

A (n)__________ is a substance with the ability to accelerate the reaction rate without being consumed by the reaction.

 

  catalyst 

  complex 

  ion 

  covalent bond 

 

Question 6

1 / 1 pts

The __________ complex is defined as the highest attainable energy state that reactants need in order to be converted into products.

 

  activated 

  temperature 

  colloid 

  gaseous 

 

Question 7

1 / 1 pts

The __________ rate of reaction describes the formation or disappearance rate of the product directly after combining reactants.

 

  initial 

  fluctuating 

  constant 

  final 

 

Question 8

1 / 1 pts

The law of heat summation is also referred to as __________ Law

 

  Charles's 

  Hess's 

  Gay Lussac's 

  Avogadro's 

 

Question 9

1 / 1 pts

__________ reactions involve three reactant molecules.

 

  unimolecular 

  semimolecular 

  bimolecular 

  termolecular 

 

Question 10

1 / 1 pts

A chemical reaction in which a single molecule is the reactant is called a(n) __________ reaction.

 

  bimolecular 

  termolecular 

  unimolecular 

  polar 

 

Question 11

1 / 1 pts

In a chemical reaction, an __________ system involves the free exchange of both heat and matter between the surroundings and the reaction container.

 

  open 

  insulated 

  closed 

  isolated 

 

Question 12

1 / 1 pts

Which term is used to describe an exploration of the relationship between work, heat, and different types of energy?

 

  Thermodynamics 

  Potential energy 

  Endothermy 

  Exothermy 

 

Question 13

1 / 1 pts

A whole chemical reaction is made up  of elementary steps referred to as a reaction __________.

 

  prediction 

  pattern 

  hypothesis 

  mechanism 

 

Question 14

1 / 1 pts

A chemical reaction that absorbs energy from the environment is called __________.

 

  endothermic 

  hyperthermic 

  inert 

  exothermic 

 

Question 15

1 / 1 pts

The molar heat of __________ is the amount of energy needed to melt one mole of a substance.

 

  vaporization 

  fusion 

  endothermy 

  melting 

 

Question 16

1 / 1 pts

The Collision theory states that chemical reactions occur when __________ collide.

 

  compounds 

  mixtures and compounds 

  elements or mixtures 

  atoms, molecules, or ions 

 

Question 17

1 / 1 pts

The __________ of solution describes how much energy is absorbed or extracted when one mole of a substance is dissolved in a solvent.

 

  molarity 

  pressure 

  power 

  heat 

 

Question 18

1 / 1 pts

__________ reactions involve two reactant molecules.

 

  Polar 

  Unimolecular 

  Termolecular 

  Bimolecular 

 

Question 19

1 / 1 pts

According to __________ principle, if a chemical system at equilibrium is disrupted, the response will counteract the stress until equilibrium is reestablished.

 

  Le Châtelier's

  Henry's 

  Charles's 

  Avogadro's 

 

Question 20

1 / 1 pts

A(n) __________ is used to compare the initial concentrations of the components of a reaction to the concentrations at equilibrium.

 

  volumeter 

  ICE table 

  calorimeter 

  fixed temperature 

 

Question 21

1 / 1 pts

Adding more product to a chemical reaction at equilibrium favors a __________ proceeding reaction.

 

  reverse 

  slowly 

  sporadically 

  forward 

 

Question 22

1 / 1 pts

Multiplying the mass of a material by it's specific heat will yield the __________ of that material.

 

  equilibrium constant 

  sublimation 

  calorimetry 

  heat capacity 

 

Question 23

1 / 1 pts

In __________, the amount of heat transfer can be measured by monitoring changes in an isolated system's temperature.

 

  endothermy 

  calorimetry 

  exothermy 

  thermodynamics 

 

Question 24

1 / 1 pts

Which of the following is the specific heat of liquid water?

 

  4.184 

  2.745 

  0.152 

  0.720 

 

Question 25

1 / 1 pts

In a chemical reaction, the __________ includes the parts that are engaged in the reaction.

 

  specific heat 

  system 

  boundaries 

  surroundings 

Answers

(118)
Status NEW Posted 13 Feb 2024 04:02 AM My Price 8.00

Che-----------mis-----------try----------- Pr-----------inc-----------ipl-----------es -----------EHS----------- Un-----------it -----------6 Q-----------uiz-----------

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1707797193-Faith Andrews Quiz History Unit 6 Quiz.pdf
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