2704401
Questão 1
Questão
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
Responda
-
More reactive than other metals
-
Softer than other elements
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Lighter than other elements
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Higher melting and boiling points
Questão 2
Questão
Which of the following trends of Alkali metals down the group is untrue
Responda
-
Softness increases down the group
-
Melting and boiling points decrease down the group
-
Density decreases down the group
-
Reactivity increases down the group
Questão 3
Questão
Group VII Elements also known as
Responda
-
Transition metals
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Halogens
-
Noble Gases
Questão 4
Questão
Describe the appearance of Bromine, a halogen
Responda
-
Black solid
-
Green gas
-
yellow gas
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dark red liquid
Questão 5
Questão
All halogens form what
Responda
-
A coloured gas
-
A coloured compound
-
A catalyst (the protector)
Questão 6
Questão
Halogens exist as diatomic molecules
Responda
- True
- False
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