Simple Word Equations Quiz

8 Questions | Total Attempts: 5685

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Simple Word Equations Quiz

A quiz designed to for NZ Year 9 or 10 students who are just learning about word equations for chemical reactions.


Questions and Answers
  • 1. 
    • A. 

      No new substance is made

    • B. 

      A new substance is made, and new atoms are formed

    • C. 

      A new substance is made, but atoms are not created or destroyed, they are just rearranged

  • 2. 
        What does this word equation represent?  iron+    oxygen iron oxide
    • A. 

      A physical change in iron (nothing new gets made)

    • B. 

      A chemical reaction between iron and oxygen, where rust (iron oxide) is produced (made)

    • C. 

      A chemical reaction between iron and rust, where oxygen is produced

  • 3. 
    Magnesium (a grey metal) can be burned in air to produce magnesium oxide (a white powder).which is the correct word equation for the reaction that happens? (Hint, many of the gases in air don't react with other substances easily).
    • A. 

      magnesium + oxygen -------> magnesium oxide

    • B. 

      magnesium + oxygen -------> iron oxide

    • C. 

      magnesium + air gases -------> magnesium oxide

    • D. 

      magnesium + air gases -------> white powder

  • 4. 
     Sodium (a soft white metal) reacts with chlorine (a smelly gas used to keep pool water clean) to produce sodium chloride (plain old table salt!). Which is the correct word equation for this chemical reaction?
    • A. 

      sodium chloride + salt -------> chlorine

    • B. 

      sodium + air gases -------> white powder

    • C. 

      sodium + chlorine -------> sodium chloride

    • D. 

      sodium + chloride -------> sodium chloride

  • 5. 
      Iron (a grey metal) reacts with sulfur (a smelly yellow solid) to produce iron sulfide (a black solid).
    • A. 

      iron + sulfur -------> iron sulfide

    • B. 

      iron + sulfur -------> iron sulfur

    • C. 

      iron + sulfide -------> iron sulfide

    • D. 

      iron + sulfur -------> iron sulfite

  • 6. 
    Lead is a grey metal. When it reacts with oxygen (a clear odourless gas) a white powder is produced.Which is the correct word equation?.
    • A. 

      lead + oxygen -------> lead oxygen

    • B. 

      lead + oxygen -------> lead oxide

    • C. 

      lead + oxygen -------> lead oxidygen

  • 7. 
    Which word equation represents hydrogen (explosive clear gas) reacting with sulfur (smelly yellow solid) to produce a smelly gas.
    • A. 

      hydrogen gas + sulfur -------> hydrosulfide

    • B. 

      hydrogen + sulfur -------> hydrogen sulfide

    • C. 

      hydrogen gas + sulfur -------> hydrogen sulfide

  • 8. 
    Now use your powers of deduction (infer things from the questions you have already answered!). Which of the following is a list of some properties that may be changed during a chemical reaction?
    • A. 

      Shape, state (solid, liquid, gas), and colour

    • B. 

      State, odour (smell), and shape

    • C. 

      Odour, colour and state.