2463935
Descrição
Quiz por Jamie Caffey, atualizado more than 1 year ago
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Criado por Jamie Caffey
mais de 9 anos atrás
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Questão 1
Questão
In the 19th century, did scientists know the structure of atoms?
Responda
- True
- False
Questão 2
Questão
In 1863, Newlands proposed his...
Responda
-
Law of octaves
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Theory of evolution
-
Law of structures
Questão 3
Questão
What did the law of octaves state?
Responda
-
8 keys in a piano is an octave
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Similar properties are repeated every 8th element
-
8 elements are a group
Questão 4
Questão
Why was Mendeleev's periodic table better than Newlands?
Responda
-
He left gaps for undiscovered elements
-
He discovered the missing elements
-
He discovered the structure of an atom
Questão 5
Questão
Elements are arranged in the periodic table in order of their atomic numbers
Responda
- True
- False
Questão 6
Questão
Why do elements in the same group have similar chemical properties?
Responda
-
They follow Newlands law of octaves
-
Their atoms have the same number of electrons in their outer shell
Questão 7
Questão
When metals react they lose electrons so...
Responda
-
The reactivity of metals in a group increases going down the group
-
The reactivity of metals in a group decreases going down the group
Questão 8
Questão
When non-metals react they gain electrons so the reactivity of non-metals decreases going down the group
Responda
- True
- False
Questão 9
Questão
Group 1 elements are called the...
Responda
-
Acid metals
-
Alkali metals
Questão 10
Questão
They react readily with...
Responda
-
Air and water
-
hydrogen
Questão 11
Questão
Alkali metals have low melting and boiling points that decrease going down the group
Responda
- True
- False
Questão 12
Questão
Alkali metals react with water to produce hydrogen gas and...
Responda
-
Oxygen
-
A metal hydroxide
Questão 13
Questão
Group 1 metals form ionic compounds in reactions
Responda
- True
- False
Questão 14
Questão
Why does reactivity increase going down group 1?
Responda
-
The outer electron is less strongly attracted to the nucleus as the number of shells increase and the atoms get larger
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The outer electron is more strongly attracted to the nucleus as the number of shells increase and the atoms get larger
Questão 15
Questão
Transistion elements are...
Responda
-
Bad conductors of heat
-
Malleable, ductile and good conductors of heat
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Not malleable and hard to bend
Questão 16
Questão
Do transition elements react slowly or quickly with oxygen and water?
Responda
-
Quickly
-
Slowly
Questão 17
Questão
Are transition elements useful as building materials?
Responda
-
No because they are weak
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Yes because they are strong and dense
Questão 18
Questão
Compounds of transition elements are...
Responda
-
Dull colours
-
Brightly coloured
Questão 19
Questão
Transition elements form positive ions
Responda
- True
- False
Questão 20
Questão
Which group are the halogens?
Responda
-
Group 1
-
Group 4
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Group 7
Questão 21
Questão
Fill in the gap: Fluorine is a ........................................... at room temperature
Responda
-
Pale yellow gas
-
Yellow solid
Questão 22
Questão
Chlorine is a green gas at room temperature
Responda
- True
- False
Questão 23
Questão
Bromine is a green liquid at room temperature
Responda
- True
- False
Questão 24
Questão
Iodine is a grey solid at room temperature that easily vapourises to a violet gas
Responda
- True
- False
Questão 25
Questão
How do halogens bond with metals and non-metals?
Responda
-
Metals: Form an ionic compound Non-metals: Bond covalently to form molecules
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Metals: They don't bond with Non-metals: Form an ionic compound
Questão 26
Questão
Why does the reactivity of the halogens decrease going down group 7?
Responda
-
The attraction of the outer electrons to the nucleus increases as the number of occupied shells increase
-
The attraction of the outer electrons to the nucleus decreases as the number of occupied shells increase
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