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Category > Chemistry Posted 13 Feb 2024 My Price 8.00

Chemistry Principles EHS Unit 4 Quiz

Question 1

1 / 1 pts

A __________ reaction occurs when one element replaces a portion of another compound to produce two new products.

 

  decomposition 

  combination 

  synthesis 

  single replacement 

 

Question 2

1 / 1 pts

__________ are the relative amount of each substance that is involved in the reaction.

 

  Solubility 

  Mass reactants 

  Stoichiometric coefficients 

  S orbitals 

 

Question 3

1 / 1 pts

Percent yield can be calculated using which of the following formulas?

 

  (Actual Yield - Theoretical yield) x 100% 

  (Actual Yield)(Theoretical yield) x 100% 

  (Actual Yield/Theoretical yield) x 100% 

  (Actual Yield +Theoretical yield) x 100% 

 

Question 4

1 / 1 pts

If velocity increases, kinetic energy __________.

 

  decreases 

  stays the same 

  fluctuates 

  increases 

 

Question 5

1 / 1 pts

__________ ions are those that are present in solution but do not participate in the overall reaction.

 

  Negative 

  Positive 

  Spectator 

  Single 

 

Question 6

1 / 1 pts

__________ have a definite volume but no definite shape.

 

  Solids 

  Gases 

  Liquids 

  Compounds 

 

Question 7

1 / 1 pts

The __________ the viscosity, the slower the flow of the material.

 

  slower 

  weaker 

  lower 

  higher 

 

Question 8

1 / 1 pts

According to the kinetic-molecular theory of gases, gas particles are in __________ motion.

 

  intermolecular 

  predictable 

  constant 

  slow 

 

Question 9

1 / 1 pts

Balance this equation: P4O10 + H2O → H3PO4

 

  4P4O10 + 3H2O → 6H3PO4

   P4O10 + 6H2O → 4H3PO4

  2P4O10 + H2O → 3H3PO4

  P4O10 + 4H2O → 4H3PO4

 

Question 10

1 / 1 pts

In a __________ reaction, the cations from the original two ionic compounds trade anions to make two new ionic compounds.

 

  decomposition 

  synthesis 

  double replacement 

  combination 

 

Question 11

1 / 1 pts

__________ occurs when a hydrocarbon reacts in the presence of oxygen to produce water and carbon dioxide.

 

  Stoichiometry 

  Solubility 

  Combustion 

  Synthesis 

 

Question 12

1 / 1 pts

In a __________ reaction, a single chemical species breaks down to produce two or more new chemical species.

 

  decomposition 

  single replacement 

  combination 

  synthesis 

 

Question 13

1 / 1 pts

Mole ratios can be made between which of the following?

 

  one reactant and one product 

  two products or two reactants 

  two products only 

  two reactants only 

 

Question 14

1 / 1 pts

__________ is  a measurement of a fluid's resistance to flow.

 

  Adhesion 

  Mass 

  Viscosity 

  Surface tension 

 

Question 15

1 / 1 pts

Anything that has mass and is moving is said to have __________ energy.

 

  light 

  solid 

  kinetic 

  particle 

 

Question 16

1 / 1 pts

The _________ yield is the amount of product produced for a given chemical reaction.

 

  limiting 

  theoretical 

  percent 

  actual 

 

Question 17

1 / 1 pts

CH4 + 2O2 → CO2 + 2H2O

 

Which of the following is a reactant in the above equation?

 

  CH4

  CO2

  None of these. 

  H2O

 

Question 18

1 / 1 pts

Vapor pressure __________ as the strength of intermolecular forces increase.

 

  stays the same 

  is unpredictable 

  increases 

  decreases 

 

Question 19

1 / 1 pts

In a __________ chemical equation, the number of atoms of each element on the reactant side is equal to the number of atoms on the product side.

 

  balanced 

  compound 

  decomposed 

  stoichiometric 

 

Question 20

1 / 1 pts

C + O2 → CO2 is an example of a(n) __________ reaction.

  metallic 

  combination 

  single replacement 

  decomposition 

 

Question 21

1 / 1 pts

Fireworks are also called __________.

 

  medieval 

  inert 

  pyrotechnics 

  pure substances 

 

Question 22

1 / 1 pts

The __________ yield represents the maximum amount that could be generated from the given amounts of reactants

 

  actual 

  theoretical 

  percent 

  limiting 

 

Question 23

1 / 1 pts

The reactant that is completely consumed in a reaction is called a(n) __________ reactant. 

 

  limiting 

  excess 

  molar 

  stoichiometric 

 

Question 24

1 / 1 pts

_________ is caused by the attraction of liquid molecules due to various intermolecular forces.

 

  Vapor pressure 

  Adhesion 

  Surface tension 

  Viscosity 

 

Question 25

1 / 1 pts

__________ pressure is a measure of pressure exerted by a gas above a liquid in a sealed container.

 

  Atmospheric 

  Solid 

  Vapor 

  Ionic 

 

Answers

(118)
Status NEW Posted 13 Feb 2024 03:02 AM My Price 8.00

Che-----------mis-----------try----------- Pr-----------inc-----------ipl-----------es -----------EHS-----------  -----------Uni-----------t 4----------- Qu-----------iz-----------

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1707796878-Faith Andrews Quiz History Unit 4 Quiz.pdf
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