2704401
Pregunta 1
Pregunta
Group 1 Elements or the Alkali Metals are Silvery metals that react with water. Which of the following is NOT a characteristic of the alkali metals
Respuesta
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More reactive than other metals
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Softer than other elements
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Lighter than other elements
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Higher melting and boiling points
Pregunta 2
Pregunta
Which of the following trends of Alkali metals down the group is untrue
Respuesta
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Softness increases down the group
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Melting and boiling points decrease down the group
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Density decreases down the group
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Reactivity increases down the group
Pregunta 3
Pregunta
Group VII Elements also known as
Respuesta
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Transition metals
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Halogens
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Noble Gases
Pregunta 4
Pregunta
Describe the appearance of Bromine, a halogen
Respuesta
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Black solid
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Green gas
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yellow gas
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dark red liquid
Pregunta 5
Pregunta
All halogens form what
Respuesta
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A coloured gas
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A coloured compound
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A catalyst (the protector)
Pregunta 6
Pregunta
Halogens exist as diatomic molecules
Respuesta
- True
- False
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