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Tenth Grade (Grade 10) Reactions Questions

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Grade 10 Reactions
Which of the following terms relates most closely to heat being released during a reaction?
  1. endothermic reaction
  2. product
  3. exothermic reaction
  4. reactant
Grade 10 Reactions
What is the product?
  1. feeling of heat after the reaction
  2. the results of the reacting substances
  3. the energy during the reaction
  4. the substance that is going to change
Grade 10 Reactions
Which of the following statements is/are true?
  1. The total mass of the substance remains same in a chemical change.
  2. A chemical change is permanent and irreversible.
  3. A physical change is temporary and reversible.
  4. All the these.
Grade 10 Reactions
The burning of methane is an example of a(n)
  1. catabolic reaction.
  2. biochemical reaction.
  3. anabolic reaction.
  4. exothermic reaction.
Grade 10 Reactions
The total of the oxidation number in an element is                .
  1. charge
  2. volatility
  3. reduction
  4. oxidation
Grade 10 Reactions
What is the reactant?
  1. the results from the change of the substance
  2. the substance that is going to change
  3. the coldness after the reaction
  4. the heat after the reaction
Grade 10 Reactions
The reduction is the decrease in                  .
  1. oxidation number
  2. charge
  3. solubility
  4. none of the above
Grade 10 Reactions
The reduction is a gain of                .
  1. electrons
  2. protons
  3. neutros
  4. oxygen
Grade 10 Reactions
Neutralization reaction is an example of                     .
  1. exothermic reaction
  2. endothermic reaction
  3. oxidation
  4. none of these
Grade 10 Reactions
Which of the following is NOT a type of chemical reaction?
  1. decomposition
  2. neutralization reaction
  3. double displacement
  4. synthesis
  5. oxides
  6. combustion
  7. single displacement
Grade 10 Reactions
A graph that shows the relationship between temperature and grams of solute dissolved is a
  1. solubility curve.
  2. solution curve.
  3. solute curve.
  4. solvent curve.
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