ellamay947
Quiz von , erstellt am more than 1 year ago

a quiz on atoms, elements, compounds and mixtures

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ellamay947
Erstellt von ellamay947 vor etwa 9 Jahre
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Quiz on Atoms, Elements, Compounds and Mixtures

Frage 1 von 7

1

Tick the boxes by the chemical changes.

Wähle eine der folgenden:

  • boiling water in an electric kettle

  • burning petrol in a car engine

  • diluting orange juice with water

  • making aluminium cans from a block of aluminium metal

Erklärung

Frage 2 von 7

1

John dropped a glass bottle of blue copper sulphate crystals. The bottle broke and the glass mixed with the crystals. Suggest how John or a teacher could clear up the mixture safely, without cutting themselves.

Wähle eine der folgenden:

  • Add water so the crystals dissolve, sweep up the glass and mop up the water.

  • Sweep up the mixture and put in bin.

  • Add acid so the mixture dissolves and mop it up.

Erklärung

Frage 3 von 7

1

Marie mixed 5g of carbon with 5g of lead oxide. She heated the mixture strongly for 15 minutes in a fume cupboard. After 15 minutes, Marie found some shiny beads in the mixture. How should Marie test to see if the beads are metal and if they are metal, what metal are they most likely to be?

Wähle eine der folgenden:

  • Check if the beads are sonorous and carbon.

  • Check if the beads are sonorous and magnesium.

  • See if they conduct heat or electricity and magnesium.

  • See if they conduct heat or electricity and lead.

Erklärung

Frage 4 von 7

1

In Marie's experiment, where, apart from the air, did oxygen come from?

Wähle eine der folgenden:

  • The Bunsen Burner

  • The lead oxide.

Erklärung

Frage 5 von 7

1

What is the name of the compound made when magnesium reacts with sulphur?

Wähle eine der folgenden:

  • magnesium sulphate

  • magnesium oxide

  • magnesium sulphide

  • magnesium oxate

Erklärung

Frage 6 von 7

1

What is the process in which you break down a substance using heat?

Wähle eine der folgenden:

  • reduction

  • oxidation

  • thermal decomposition

  • combustion

Erklärung

Frage 7 von 7

1

Select the word equation for the reaction between magnesium and oxygen.

Wähle eine der folgenden:

  • magnesium + crucible = magnesium oxide

  • magnesium + oxygen = magnesium oxidate

  • magnesium + oxygen = magnesium oxide

Erklärung

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