The periodic table

Elements are arranged in the periodic table.

Figure 1 shows the position of five elements in the periodic table.

Which element in Figure 1 is a metal?

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C Ca Cl He Si

Which element in Figure 1 is a halogen?

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C Ca Cl He Si

Which element in Figure 1 forms fullerenes?

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C Ca Cl He Si

Which element in Figure 1 has atoms with a stable arrangement of electrons?

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C Ca Cl He Si

Which two elements in Figure 1 have atoms with the same number of electrons in their outer shell?

Figure 2 shows some of the elements in Group 1 of the periodic table.

An atom of lithium has 3 electrons.

Complete Figure 3 to show the electronic structure of lithium.

Figure 3

Which of the Group 1 elements in Figure 2 is the most reactive?

Figure 4 shows sodium reacting with water.

Give two observations that can be made when sodium reacts with water.

Sodium reacts with water to produce an alkaline solution.

What is the name of the alkaline solution produced?

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Sodium chloride solution

Sodium hydroxide solution

Sodium sulfate solution

This question is about Group 7 elements.

Figure 2 shows some Group 7 elements in the periodic table.

What is the name of the Group 7 elements?

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Alkali metals

Halogens

Noble gases

Which element in Figure 2 has the highest melting point?

A fluorine atom has 9 electrons.

What is the electronic structure of a fluorine atom?

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2,3,4

2,7

4,3,2

7,2

What type of structure does chlorine have?

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Giant covalent

Ionic lattice

Small molecules

Name the compound produced when potassium reacts with iodine.

A less reactive Group 7 element can be displaced from an aqueous solution of its salt by a more reactive Group 7 element.

Complete Table 2 to show if a reaction occurs when the element is added to the aqueous solution.

Use: ✓ where a reaction occurs ✗ where there is no reaction.

This question is about structure and bonding.

Figure 10 represents the electronic structure of an atom of an element.

Name the element in Figure 10.

Give one reason for your answer.

Use the periodic table.

Sodium reacts with fluorine to produce sodium fluoride.

Sodium fluoride is an ionic compound.

An atom of sodium and an atom of fluorine react to form a sodium ion and a fluoride ion.

Complete the dot and cross diagram for the sodium ion and the fluoride ion.

Show the charges on the ions.

Figure 11 represents the structure of sodium fluoride.

Describe how sodium ions and fluoride ions are held together in sodium fluoride.

What is a property of sodium fluoride?

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Conducts electricity when solid

High melting point

Low boiling point

This question is about structure and bonding.

Figure 1 represents the electronic structure of an atom of an element.

Name the element in Figure 1.

Give one reason for your answer.

Use the periodic table.

Sodium reacts with fluorine to produce sodium fluoride.

Sodium fluoride is an ionic compound.

An atom of sodium and an atom of fluorine react to form a sodium ion and a fluoride ion.

Complete the dot and cross diagram for the sodium ion and the fluoride ion.

Show the charges on the ions.

Figure 2 represents the structure of sodium fluoride.

Describe how sodium ions and fluoride ions are held together in sodium fluoride.

What is a property of sodium fluoride?

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Conducts electricity when solid

High melting point

Low boiling point

This question is about elements.

Figure 1 shows the chemical symbols of five elements in the periodic table.

Which element is a noble gas?

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Which element forms fullerenes?

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Which two elements have atoms with the same number of electrons in their outer shell?

Use Figure 1.

Argon is very unreactive.

Figure 2 represents the electronic structure of an argon atom.

How does the electronic structure show that argon is unreactive?

Figure 3 shows some of the elements in Group 7 of the periodic table.

Chlorine gas consists of molecules.

What is the formula of a chlorine gas molecule?

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Which Group 7 element is the most reactive?

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Lithium atoms react with bromine atoms to produce lithium bromide.

Lithium bromide contains lithium ions and bromide ions.

Figure 4 shows the electronic structure of the atoms and ions.

The symbols (o) and (x) represent electrons.

Only the outer shell electrons are shown.

Describe what happens when a lithium atom reacts with a bromine atom to produce a lithium ion and a bromide ion.

A 1 kilogram mass is made from a mixture of metal A and metal B.

Figure 3 represents part of the structure of the 1 kilogram mass.

Figure 3

What is the ratio of metal A atoms to metal B atoms in Figure 3 ?

What is a mixture of metals called?

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A silicon sphere has a mass of 1 kilogram.

The largest impurity in the silicon sphere is copper.

There are 7 × 10^–5 g of copper in the silicon sphere.

What is the mass of copper in kilograms in the silicon sphere?

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An atom of silicon has 14 electrons.

What is the electronic structure of silicon?

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Silicon dioxide is a compound of silicon and oxygen.

Figure 4 represents part of the giant structure of silicon dioxide.

Figure 4

Which two words describe the bonding in silicon dioxide?

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How many silicon atoms are bonded to each oxygen atom in silicon dioxide?

Use Figure 4.

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Which symbol represents the state of silicon dioxide at room temperature?

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This question is about Group 1 metals.

Figure 1 shows the melting points of Group 1 metals plotted against their atomic number.

Describe the trend shown by the melting points of Group 1 metals as the atomic number increases.

Determine the atomic number and melting point of caesium.

Use Figure 1.

Lithium is a Group 1 metal.

A lithium atom can be shown as.

How many electrons does the outer shell of a lithium atom contain?

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Lithium reacts with oxygen to produce lithium oxide.

Draw one line from each substance to the correct description of the substance.

Balance the equation for the reaction of lithium with oxygen.

What type of bonding is present in lithium oxide?

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Calculate the relative formula mass (M_r) of lithium oxide (Li₂O).

Relative atomic masses (A_r): Li = 7 O = 16