Chemical Reaction Of Respiration Quiz

21 Questions | By Julierbrown | Updated: Mar 21, 2022 | Attempts: 248

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In this quiz, you will get to learn about the chemical reactions. Play this quiz and test your knowledge on this!

Questions and Answers

1.

What type of reaction is FeS + 2HCl --> FeCl2 + H2S
- A.
  
  Synthesis
- B.
  
  Decomposition
- C.
  
  Physical
- D.
  
  Replacement
2.

In a chemical equation numbers often appear in front of a chemical formula. These numbers tell you the
- A.
  
  Number of atoms in each molecule in the reaction
- B.
  
  Number of elements in the reaction
- C.
  
  Number of molecules or atoms of each substance in the reaction
- D.
  
  Number of molecules in each atom in the reaction
3.

Chemistry is...
- A.
  
  A characteristic of substance that can be observed without changing the substance into another substance
- B.
  
  The study of matter an how matter changes
- C.
  
  Anything that has mass and takes up space
- D.
  
  A rapid reaction between oxygen and a substance called a fuel
4.

A chemical reaction that absorbs energy in the form of heat is described as
- A.
  
  Endothermic
- B.
  
  Exothermic
- C.
  
  Combustion
- D.
  
  Unbalanced
5.

The substances listed on the left side of a chemical equation are the
- A.
  
  Products
- B.
  
  Coefficients
- C.
  
  Precipitates
- D.
  
  Reactants
6.

Which two processes could be considered opposites?
- A.
  
  Decomposition and replacement
- B.
  
  Replacement and precipitate
- C.
  
  Precipitate and synthesis
- D.
  
  Synthesis and decomposition
7.

Which group contains the most elements?
- A.
  
  Metalloids
- B.
  
  Nonmetals
- C.
  
  Metals
- D.
  
  Transition elements
8.

Every chemical reaction involves a change in
- A.
  
  Mass
- B.
  
  Energy
- C.
  
  Concentration
- D.
  
  State
9.

The number placed below an element's symbol in a chemical formula is called a
- A.
  
  Subscript
- B.
  
  Coefficient
- C.
  
  Reactant
- D.
  
  Product
10.

CaCO3 represents a chemical ...
- A.
  
  Symbol
- B.
  
  Formula
- C.
  
  Subscript
- D.
  
  Reaction
11.

The only sure evidence for a chemical reaction is
- A.
  
  The formation of a gas
- B.
  
  A color change
- C.
  
  The production of one or more new substances
- D.
  
  Changes in properties
12.

The principle of conservation of mass is true...
- A.
  
  Only for reactions that take place in open systems
- B.
  
  Only for reactions that take place in closed systems
- C.
  
  For all reactions
- D.
  
  For no reactions
13.

What happens when chemical bonds break and new bonds form
- A.
  
  A physical change
- B.
  
  A chemical reaction
- C.
  
  Matter is destroyed
- D.
  
  Surface area increases
14.

A chemical equation that shows the same number of each kind of atom on both sides of the equation is said to be....
- A.
  
  Balanced
- B.
  
  Unbalanced
- C.
  
  An incomplete reaction
- D.
  
  A replacement reaction
15.

From an element's location in the periodic table you can predict
- A.
  
  Its properties
- B.
  
  Name
16.

In chemical reactions, what does the principle of conservation of mass mean?
- A.
  
  Matter is not created or destroyed
- B.
  
  The total mass of the reactants is greater than the total mass of the products
- C.
  
  The total mass of the reactants is less than the total mass of the products
- D.
  
  Matter can never be changed
17.

What type of chemical reaction is represented in the reaction ____ N₂ + __3__ H₂ à ___2_ NH₃
- A.
  
  Synthesis
- B.
  
  Decomposition
- C.
  
  Replacement
- D.
  
  Combustion
18.

2 H₂ + O₂ à ____ H₂O
19.

2 Ag₂O à ____ Ag + O₂
20.

What are the reactants in the following equations 2 H₂O + O₂ à 2 H₂O₂
- A.
  
  Water and oxygen
- B.
  
  Hydrogen peroxide
- C.
  
  Carbon dioxide
- D.
  
  Oxygen