Chemistry Quiz

Beschreibung

Year 11 Core Science Quiz am Chemistry Quiz, erstellt von First Name am 27/02/2018.
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Quiz von First Name, aktualisiert more than 1 year ago
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Erstellt von First Name vor fast 7 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
What is an ion?
Antworten
  • An ion is a atom that has gained or lost an electron
  • An ion is a substance that can displace all other substances
  • An ion is an element
  • An ion is a group of atoms that is joined with a covalent bond

Frage 2

Frage
What is a covalent bond?
Antworten
  • A covalent bond is what an ion formes after it gains an electron
  • A covalent bond is a acadic solution
  • A covalent bond is a bond formed between two or more atoms when they share a pair of electrons
  • A covalent bond is a substance that can only be displaced

Frage 3

Frage
What is a displacement reaction?
Antworten
  • Its when one solution take the place of another solution
  • It is when one ion takess the place of another ion in a compound
  • Its when one or more atoms are connected bt a covalent biond
  • Its when a compound gets its place taken by a molecule

Frage 4

Frage
When X Ion can displace Z ion. But X cannot displace Yi on. What is the most reactive ion.
Antworten
  • X
  • Y
  • Z

Frage 5

Frage
Why dose a catalyst make a reaction faster?
Antworten
  • It lowers the activation energy and this makes each collision more likely to succeed in its reaction increcing the reaction rate.
  • It highers the activation energy making the reaction temperature higher and so making the atoms move more
  • It causes the colisions happening to become less freuent and this then makes it more likly that it reacts
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