Group 0: the noble gases

This question is about elements in the periodic table.

Describe where the non-metallic elements are found in the periodic table.

Gallium (Ga) is a metallic element in Group 3.

Which of these properties of gallium is not typical of most metals?

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A sodium atom can be represented as²³₁₁Na

Complete Figure 12 to show the electronic structure of a sodium atom.

Mendeleev created an early periodic table.

Mendeleev placed most of the elements in order of atomic weight.

Tellurium and iodine were not placed in order of atomic weight.

Why did Mendeleev not place tellurium and iodine in order of atomic weight?

Argon is an element in Group 0 of the periodic table.

Explain why argon is unreactive.

An element X consists of two isotopes.

What is meant by ‘isotopes’?

Answer in terms of subatomic particles.

Table 5 shows the mass numbers and percentage abundances of the isotopes of X.

Which is the closest estimate to the relative atomic mass of X ?

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This question is about elements in the periodic table.

Describe where the non-metallic elements are found in the periodic table.

Gallium (Ga) is a metallic element in Group 3.

Which of these properties of gallium is not typical of most metals?

Tick () one box.

A sodium atom can be represented as²³₁₁Na

Complete Figure 1 to show the electronic structure of a sodium atom.

Mendeleev created an early periodic table.

Mendeleev placed most of the elements in order of atomic weight.

Tellurium and iodine were not placed in order of atomic weight.

Why did Mendeleev not place tellurium and iodine in order of atomic weight?

Argon is an element in Group 0 of the periodic table.

Explain why argon is unreactive.

An element X consists of two isotopes.

What is meant by ‘isotopes’?

Answer in terms of subatomic particles.

Table 1 shows the mass numbers and percentage abundances of the isotopes of X.

Which is the closest estimate to the relative atomic mass of X ?

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This question is about the periodic table.

Sodium and potassium are in Group 1 of the periodic table.

Give one similarity and one difference between the electronic structures of sodium and potassium.

Group 1 elements react with water.

Give two observations made when potassium reacts with water.

Potassium hydroxide solution is produced when potassium reacts with water.

What is the colour of universal indicator when added to potassium hydroxide solution?

Give one reason for your answer.

Colour of universal indicator

Table 4 shows the densities of some of the elements in Group 0 of the periodic table.

Plot the data from Table 4 on Figure 15.

Estimate the density (X) of krypton.

Use Figure 15 and Table 4.

The elements in Group 7 are called the halogens.

A more reactive halogen can displace a less reactive halogen from a solution of its salt.

Which combination of solutions will produce a reaction when mixed?

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Which of the following describes the trends going down Group 7?

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This question is about the periodic table.

Sodium and potassium are in Group 1 of the periodic table.

Give one similarity and one difference between the electronic structures of sodium and potassium.

Group 1 elements react with water.

Give two observations made when potassium reacts with water.

Potassium hydroxide solution is produced when potassium reacts with water.

What is the colour of universal indicator when added to potassium hydroxide solution?

Give one reason for your answer.

Colour of universal indicator

Table 1 shows the densities of some of the elements in Group 0 of the periodic table.

Plot the data from Table 1 on Figure 1.

Estimate the density (X) of krypton.

Use Figure 1 and Table 1.

The elements in Group 7 are called the halogens.

A more reactive halogen can displace a less reactive halogen from a solution of its salt.

Which combination of solutions will produce a reaction when mixed?

Tick () one box.

Which of the following describes the trends going down Group 7?

Tick () one box.

This question is about elements in the periodic table.

Argon has the atomic number 18 Explain why argon does not form compounds. Answer in terms of electrons.

Phosphorus (P) is the element below nitrogen in the periodic table. Predict the formula of the compound formed between phosphorus and hydrogen.

Tellurium is the element with atomic number 52 Predict whether tellurium reacts with metals. Explain your answer. Answer in terms of the position of tellurium in the periodic table.

Barium (Ba) is an element in Group 2 of the periodic table. Barium reacts with hydrochloric acid.

Suggest two observations that could be made when barium reacts with hydrochloric acid.

Write a balanced symbol equation for the reaction between barium and hydrochloric acid.

This question is about the periodic table.

Figure 6 shows an early version of the periodic table published by a scientist.

The scientist left gaps in the periodic table in Figure 6.

Each gap is represented by a question mark (?).

Give one reason why the scientist left gaps in this periodic table.

Which scientist published the periodic table in Figure 6 ?

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The modern periodic table is different from the periodic table in Figure 6.

One extra group of elements has been added.

What is the name of the extra group of elements in the modern periodic table?

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Why do the elements in Group 1 of the modern periodic table have similar chemical properties?

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Table 3 shows the melting points of the first five elements going down Group 1.

Predict value X.

Give one observation you would see when a small piece of potassium is added to water.

Table 4 shows information about the first five elements going down Group 7.

Complete Table 4.

The elements in Group 7 consist of molecules.

What is the formula of a molecule of bromine?

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This question is about elements, compounds and mixtures.

Substance A contains only one type of atom.

Substance A does not conduct electricity.

Which type of substance is A ?

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Substance B contains two types of atoms.

The atoms are chemically combined together in fixed proportions.

Which type of substance is B ?

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What is the name of the elements in Group 0 of the periodic table?

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Which statement about the elements in Group 0 is correct?

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Neon is in Group 0.

What type of particles are in a sample of neon?

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Figure 1 represents part of the structure of an oxide of a metal.

Determine the empirical formula of this oxide.

Empirical formula = XO___

A nanoparticle of a metallic element is a cube.

Figure 2 shows a diagram of the nanoparticle.

The surface area of a cube is given by the equation:

surface area = length of side² × 6

Calculate the surface area of the cube in Figure 2.

Give your answer to 2 significant figures.

Fine and coarse particles of the metallic element are also cubes.

The length of a fine particle cube is 10 times smaller than the length of a coarse particle cube.

How does the surface area to volume ratio of the fine particle cube compare with that of the coarse particle cube?

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