11821496
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace casi 7 años
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Pregunta 1
Pregunta
The Periodic Table lists all the known elements.
Elements are arranged in order of [blank_start]....... 1 .......[blank_end] number.
The melting points of Group I elements [blank_start]....... 2 .......[blank_end] down the group.
The melting points of Group VII elements [blank_start]....... 3 .......[blank_end] down the group.
Respuesta
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atomic
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decrease
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increase
Pregunta 2
Pregunta
Which information about an element can be used to predict its chemical properties?
Respuesta
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boiling point
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density
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melting point
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position in the Periodic Table
Pregunta 3
Pregunta
Which statement about the Periodic Table is correct?
Respuesta
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Elements in the same period have the same number of outer electrons.
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The elements on the left are usually gases.
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The most metallic elements are on the left.
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The relative atomic mass of the elements increases from right to left.
Pregunta 4
Pregunta
Which statement is correct for the element with proton number 19?
Respuesta
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It is a gas that dissolves in water.
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It is a hard metal that is not very reactive with water.
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It is a non-metal that burns quickly in air.
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It is a soft metal that is highly reactive with water.
Pregunta 5
Pregunta
What is the name of an element from Period 4 that is a liquid at room temperature?
Respuesta
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Calcium
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Bromine
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Krypton
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Germanium
Pregunta 6
Pregunta
Selenium and sulfur are both in Group VI. Which of these properties do they share (have the same)?
Respuesta
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Six outer shell electrons.
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Their electrons are arranged (found) in three shells.
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They belong to the same period of the Periodic Table.
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They are both metalloids.
Pregunta 7
Pregunta
Choose an element from the list below which best fits each description.
(a) An element which reacts with cold water. [blank_start]...............[blank_end]
(b) It is a solid at room temperature and exists as diatomic molecules, X2. [blank_start]...............[blank_end]
(c) It can form two oxides, XO and X2O3. [blank_start]...............[blank_end]
Respuesta
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Fe
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I
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Rb
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Fe
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I
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Rb
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I
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Fe
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Rb
Pregunta 8
Pregunta
Iron is a transition element. Which of the following statements about transition elements are correct?
Tick three boxes.
Respuesta
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The metals are highly coloured e.g. yellow, green, blue.
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The metals have low melting points.
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Their compounds are highly colourled.
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The elements and their compounds are often used as catalysts.
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They have more than one oxidation state.
Pregunta 9
Pregunta
In which Period in the Periodic Table is iron to be found?
Respuesta
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Period 3
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Period 4
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Period 5
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Period 6
Pregunta 10
Pregunta
Use the Periodic Table to work out the number of protons and the number of neutrons in one atom of iron (Fe). (Write your answers as numerals)
number of protons = [blank_start]........[blank_end] number of neutrons = [blank_start].........[blank_end]
Respuesta
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26
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30
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