Test
igcse Chemistry
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Preguntas del test (6)
1Sodium Chloride is an example of [blank_start]ionic[blank_end] bonding.
- Aionic
2[blank_start]Covalent[blank_end] bonds take place between two [blank_start]non-metals[blank_end]. This happens by atoms sharing pairs of electrons. A [blank_start]covalent[blank_end] bond always has [blank_start]2[blank_end] electrons.
- ACovalent
- Bcovalent
- C2
- Dnon-metals
3Metallic Bonding occurs with a [blank_start]lattice[blank_end] of metal [blank_start]ions[blank_end] surrounded by a sea of [blank_start]delocalised[blank_end] electrons. The same applies for [blank_start]alloys[blank_end], however there will be at least 2 different types of metal ion in the [blank_start]lattice[blank_end]. Electrons can become [blank_start]delocalised[blank_end] easily because metals have [blank_start]few[blank_end] electrons in their [blank_start]outer[blank_end] shells.
- Alattice
- Bgroup
- Csea
- Datoms
- Eions
- Fdelocalised
- Gfree
- Hnegatively charged
- Imetal oxides
- Jmetallic compounds
- Kalloys
- Llattice
- Msea
- Ngroup
- Odelocalised
- Pbonded
- Qlost
- Rfew
- Smany
- Tno
- U6
- Vouter
- Winner
- Xintermediate
4Simple Covalent Bonds have a high melting/boiling point.
- AVerdadero
- BFalso
5Diamond and Graphite are both made purely of carbon.
Graphite can conduct electricity because it has [blank_start]delocalised[blank_end] electrons.- Adelocalised
6[blank_start]Ionic[blank_end] compounds cannot conduct [blank_start]electricity[blank_end] in their [blank_start]solid[blank_end] forms, but can when [blank_start]molten[blank_end]. This is because the charged [blank_start]ions[blank_end] are free to move in a [blank_start]liquid[blank_end], and can carry a [blank_start]charge[blank_end].
- AIonic
- BCovalent
- CMetallic
- Delectricity
- Eheat
- Fsolid
- Gliquified
- Hgaseous
- Imolten
- Jions
- Katoms
- Lsolution
- Mcharge
Información
- Descripción
- A series of questions covering all topics in the igcse chemistry exam
- Autor
- Tom Green
- Idioma
- English
- Visitas
- 1.069
- Etiquetas
- Valoración
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