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KS3 Chemical Reactions

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  • An example of an endothermic reaction would be...
    Photosynthesis
    Hand warmer
    Self heating drinks can
    Respiration
  • How many atoms in NaOH?
    2
    1
    3
    4
  • Conservation of mass means...
    Atoms are not created or destroyed during chemical reactions
    Atoms are created and destroyed during chemical reactions
  • What is the positive result when testing for oxygen?
    Damp litmus paper bleached white
    Squeaky pop
    Splint relights
    Limewater turns milky white
  • How many atoms in one molecule of water?
    1
    4
    3
    2
  • What is the symbol for gold?
    Au
    Pb
    Fe
    Zn
  • What is the symbol for magnesium?
    Mg
    Zn
    Cu
    O
  • What is the symbol for lithium?
    Li
    H
    He
    O
  • A reaction is endothermic. This means that...
    Temperature of the surroundings decrease
    Temperature of the surroundings increase
  • Copper reacts with oxygen to produce...
    Oxicopperdide
    Copper oxide
    Copper and oxygen
    Copper oxate
  • How many atoms in NaCl?
    2
    1
    4
    3
  • What is the test for carbon dioxide?
    Damp litmus paper
    Lit splint
    Burning splint
    Bubble through limewater
  • Magnesium reacts with oxygen to produce magnesium oxide. Identify the reactants.
    Magnesium Oxide
    Magnesium and oxygen
    Magnesium
    Oxygen
  • An example of an exothermic reaction would be...
    Photosynthesis
    Chocolate melting
    Sports Injury Cool Pack
    Respiration
  • What is the positive result when testing for hydrogen?
    Squeaky pop
    Limewater turns milky white
    Damp litmus paper bleached white
    Splint relights
  • A reaction is exothermic. This means that...
    Temperature of the surroundings increase
    Temperature of the surroundings decrease
  • What is the symbol for copper?
    Fe
    Cu
    Al
    Zn
  • What is the positive result when testing for chlorine?
    Damp litmus paper is bleached white
    Splint relights
    Limewater turns milky white
    Squeaky pop
  • What is the test for chlorine?
    Lit splint
    Burning splint
    Damp litmus paper
    Bubble through limewater
  • What is the test for hydrogen?
    Bubbling through limewater
    Glowing splint
    Lit splint
    Damp litmus paper
  • What is the test for oxygen?
    Glowing splint
    Limewater turns milky white
    Damp litmus paper
    Burning splint
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