821969
Pregunta 1
Pregunta
What is a compound?
Respuesta
-
A substance made of two or more elements that have reacted together or that are chemically bonded together.
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A unit of currency that supports Communism.
Pregunta 2
Pregunta
Which electrons in an atom are involved in bonding?
Respuesta
-
The inner-shell electrons
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The outer-shell electrons
Pregunta 3
Pregunta
What happens to the electrons when ionic bonds are formed?
Respuesta
-
They are transferred - non-metal atoms gain them, and metal atoms lose them.
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They are shared between the atoms.
Pregunta 4
Pregunta
What happens to electrons in atoms when covalent bonds are formed?
Respuesta
-
They are delocalised
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They are shared between atoms
Pregunta 5
Pregunta
Why do the elements in Group 1 form ions with a single positive charge?
Respuesta
-
Because they gain an outer-shell electron
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Because they lose an outer-shell electron
Pregunta 6
Pregunta
Elements in Group 7 form ions with a single negative charge. This is because they gain an outer-shell electron.
Respuesta
- True
- False
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