1517847
Descrição
Quiz por Rebecca Ryder, atualizado more than 1 year ago
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Criado por Rebecca Ryder
aproximadamente 10 anos atrás
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Questão 1
Questão
What is the charge and mass of an electron
Responda
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charge=+1 mass=1
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charge=-1 mass=1
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charge=-1 mass=1/2000
Questão 2
Questão
Which ones are the correct state symbols?
Responda
-
Solid - s
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Liquid - lq
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Gas - g
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Aqueous - a
Questão 3
Questão
What do ionic bonds form?
Responda
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Ion
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Element
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Compound
Questão 4
Questão
What happens to electrons in ionic bonding?
Responda
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a metal loses electron(s) and a non-metal gains electron(s).
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a metal gains electron(s) and a non-metal loses electron(s).
Questão 5
Questão
In ionic bonding, which charged particles attract?
Responda
-
positive with positive
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negative with negative
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positive with negative
Questão 6
Questão
What are the correct properties of giant ionic compounds?
Responda
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it conducts as a liquid and as a solid as the electrons are free to move
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they are very brittle and break when hit
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they have extremely low melting points due to lots of bonds
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they are soluble in water
Questão 7
Questão
NH3 is ammonia
Responda
- True
- False
Questão 8
Questão
compounds such as carbon dioxide (CO2), chlorine (Cl2) and water (H2O) are called simpelr molecular compounds.
Responda
- True
- False
Questão 9
Questão
what are the correct properties of a simple covalent compounds
Responda
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low melting point
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strong covalent bonds between atoms
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strong intermolecular forces
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doesn't take a lot of energy to break the bonds
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not usually a gas
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no electrical conductivity
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doesn't conduct as a solid or liquid but does conduct as a gas
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there are no charged particles
Questão 10
Questão
Diamond is made up of carbon atoms. Each carbon atom has four strong bonds and is very hard.
Responda
- True
- False
Questão 11
Questão
diamond is a simple covalent structure
Responda
- True
- False
Questão 12
Questão
Does diamond have a low or high melting point?
Responda
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Low melting point
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High melting point
Questão 13
Questão
diamond can conduct electricity
Responda
- True
- False
Questão 14
Questão
Tick the correct statements in reference to Graphite
Responda
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made up of carbon atoms
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has 5 strong bonds
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atoms form layers
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contains delocalised electrons
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the delocalised electrons are not free to move
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cannot conduct electricity
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layers can slide over each other
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graphite is soft
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low melting point
Questão 15
Questão
metals are soft and malleable
Responda
- True
- False
Questão 16
Questão
metals are weak
Responda
- True
- False
Questão 17
Questão
they are good conductors of electricity
Responda
- True
- False
Questão 18
Questão
they are poor conductors of heat
Responda
- True
- False
Questão 19
Questão
what is an alloy?
Responda
-
a pure metal
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a mixture of metals
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a mixture of metals and non-metals
Questão 20
Questão
a metallic bond is the bonding of the free electrons in metals.
Responda
- True
- False
Questão 21
Questão
the attraction is between neutral metal ions and delocalised electrons
Responda
- True
- False
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