Shannon Bradner
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Year 9 Chemistry (Triple Chemistry - Paper C - Bonding, Fullerenes, Alletropes) Quiz am Triple Chemistry C - Quiz, erstellt von Shannon Bradner am 20/04/2019.

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Shannon Bradner
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Triple Chemistry C - Quiz

Triple Chemistry C - Quiz

Frage 1 von 11

1

A polymer contains two types of bond. What are they?

Wähle eine der folgenden:

  • Covalent and intramolecular?

  • Ionic and covalent?

  • Covalent and intermolecular?

  • Ionic and intermolecular?

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Frage 2 von 11

1

Fülle die Lücken, um den Text zu vervollständigen.

When metals form ions, they electrons, resulting in a charged atom (otherwise known as a cation). When a non-metal forms an ion, they electrons, resulting in a charged ion (also known as an anion). The amount of electrons gained or lost forms the of an ion.

The of electrons in ionic bonding can be shown with a and cross diagram.

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Frage 3 von 11

1

Wähle von der Dropdown-Liste, um den Text zu vervollständigen.

As you go down the groups, the reactivity changes. In groups 1 and 2, as you go down, the reactivity ( increases, decreases ). This is because the outer shell is ( closer to, further away ) from the ( nucleus, other shells ) and the electrons have ( less, more ) of an attraction to the nucleus, meaning they can give away their valence electrons easier.

As you go down groups 6 and 7, it is the ( opposite, same ). As you go down the elements become ( more, less ) reactive. The valence electrons are still less attracted to the nucleus, but that makes it ( easier, harder ) for them to attract more electrons.

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Frage 4 von 11

1

Ionic compounds have a giant . The positive / negative bonds hold each in place in the structure.

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    regular
    irregular
    lattice
    lettuce
    structure
    ion
    atom
    3D
    2D

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Frage 5 von 11

1

The order of strength in bonds from highest to lowest is:
Ionic
Metallic
Covalent
Intermolecular.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 6 von 11

1

Ionic compounds conduct electricity as solids, liquids and dissolved.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 7 von 11

1

Fülle die Lücken, um den Text zu vervollständigen.

Metals also have a structure. The valence electrons of each metal atom are lost to the structure to create a sea of electrons. This turns each metal atom into a positive . The positive / negative charges create an electrostatic forces that keep the delocalised electrons within the structure, but still free to move around.

Pure metals have a melting and boiling point, high tensile strength and are also malleable.

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Frage 8 von 11

1

Tick all that apply about small molecules.

Wähle eine oder mehr der folgenden:

  • They have low melting and boiling points.

  • They are made with two and only two non-metal atoms.

  • The molecules can bond together with intermolecular forces to create a larger version of itself. (e.g lots of molecules of water make a glass of water).

  • The intermolecular forces are easy to break but the covalent bonds inside the molecules aren't.

  • Most are gaseous or liquid at room temperature.

  • They are good conductors.

  • They have high melting and boiling points.

  • They are made of two or more non-metal atoms.

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Frage 9 von 11

1

Giant covalent structures are sometimes known as macromolecules.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 10 von 11

1

An alletrope is a pure element in a physical form.

There are many alletropes of carbon.

Diamond is one of them. It has a structure where each carbon atom forms covalent bonds. This makes it very and a non-conductor. Diamond is and is good for .

Graphite (and graphene, which is just of graphite) is different. It has a hexagonal ring structure that forms covalent bonds. This leaves one free electron per carbon atom, making graphite and graphene very good conductors of electricty and a very good insulator.

The layers of graphene in graphite are held together very , which means the layers can slide over each other easily. Graphite is and opaque with a high melting point, whereas graphene is just thick, transparent and light.

Graphite and graphene are used in pencils and graphene is often used in computer microchips.

Klicke und ziehe, um den Text zu vervollständigen.

    different
    tetrahedral
    hexagonal
    hard
    soft
    lustrous
    jewellery
    multiple layers
    a single layer
    three
    four
    loosely
    tightly
    black
    white
    one atom
    two atoms

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Frage 11 von 11

1

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Nanoparticles are between and 100 nanometres. They are than atoms and small molecules but than pretty much everything else. They have a high surface area to ratio meaning a bigger portion of the particle can react on contact.

Nanoparticles are good (meaning they can speed up a reaction)< they are good in cosmetics and lubricants, they conduct electricity, are very durable and can contain anti-bacterial proerties.
A , which can deliver drugs to the body, is a good example of a nanoparticle.

Unfortunately, the effect of nanoparticles on the human body is not yet understood, meaning they could be harmful.

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