C8 The Periodic Table

C8
The Periodic Table

-Describe the periodic table as an arrangement elements in periods and groups in order of increasing proton number/atomic number
-Describe the change from metallic to non-metallic character accross a period
- Explain similarities in the chemical properties of elements in the same group of the periodic table in terms of their electronic configuration

Core- Arrangement of elements

Learning Objectives

Learning Objectives

Supplementary- Arrangement of elements

-Identify trends in group, given information about the elements

- Describe the group 1 alkali metals, limited to;
a. decreasing melting point
b. increasing density
c. increasing reactivity with water

Core-Group 1 Properties

Learning Objectives

- Describe the group VII halogens, chlorine, bromine and iodine, as diatomic non-metals with general trends down the group , limited to;
a. increasing density
b. decreasing reactivity
-State the appearance of the halogens at room temperature and pressure, r.t.p, as;
a. chlorine, a pale yellow-green gas
b. bromine, a red-brown liquid
c. iodine, a grey-black solid

Core-Group VII Properties

Learning Objectives

- Describe the transition elements as metals that have;
a. high density
b. high melting points
c. form coloured compounds
d. often act as catalysts as elements and in compounds

Core-Transition Metals

Learning Objectives

- Describing noble gases, in group VIII as being unreactive, monoatomic gases and explain this in the terms of electronic structure

Core-Noble Gases

Learning Objectives

C8.01
Arrangements of elements

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Multiple Choice

The Modern Periodic Table of Elements is arranged by __________.

• atomic mass

• 
  valence electrons

• atomic number

• number of isotopes

Multiple Choice

What determines the order of elements on today's periodic table?

• increasing atomic mass

• increasing atomic number

• decreasing atomic mass

• 
  decreasing atomic number

Multiple Choice

The vertical (up and down) columns in the Periodic Table are called

• 
  groups

• 
  periods

• 
  towers

• 
  atomic numbers

Multiple Choice

The figure shows an outline of the periodic table with certain marked.

Identify which combination of the elements V, W, X, or Y in the table is a metal and a non-metal.

• A

• B

• C

• D

Multiple Choice

The horizontal (left to right) or rows in the Periodic Table are called _____________.

• 
  groups

• 
  periods

• 
  towers

• 
  atomic numbers

Multiple Choice

Elements in a .................. have similar chemical properties.

• period

• row

• group

• atomic number

Multiple Choice

The Periodic Table list all the known elements.

Elements are arranged in order of ____(1) number.

The melting points of Group 1 elements ____ (2) down the group.

The melting points of Group VII elements _____(3) down the group.

Which words correctly complete the gaps 1, 2 and 3?

• A

• B

• C

• D

Multiple Choice

Which information about an element can be used to predict its chemical properties?

• boiling point

• density

• melting point

• position in the Periodic Table

Multiple Choice

Which statement about the Periodic Table is correct?

• Elements in the same period have the same number of outer electrons.

• The elements on the left are usually gases.

• The most metallic elements are on the left.

• The relative atomic mass of the elements increases from right to left

Multiple Choice

Which statement is correct for the element of proton number 19?

• It is a gas that dissolves in water.

• It is a hard metal that is not very reactive with water.

• It is a non-metal that burns quickly in air.

• It is a soft metal that is highly reactive with water.

Multiple Choice

What does the atomic number of an atom represent?

• Number of neutrons in the atom

• Number of electrons in the atom

• 
  Number of protons in the atom

• 
  Number of shells in the atom

Multiple Choice

Periodic Trends

As you move across the periodic table atoms tend to get smaller because __________.

• 
  the atoms have more mass.

• the atoms have more protons.

• 
  the atoms have become less metallic

• 
  the atoms have less electrons.

Multiple Choice

As you move down the periodic table atoms get bigger.  This is because ____________.

• 
  The atoms have more mass.

• The atoms have more protons.

• The atoms have more nuetrons

• The atoms have more energy levels

Multiple Choice

As move you down (up and down) the periodic table, METALS tend to be _________,

• less reactive

• not reactive

• more reactive

• unreactive

Multiple Choice

As you move down the periodic table of the elements, densities and melting points of the elements __________.

• increase

• decrease

• stable

• stays the same

Multiple Choice

In the outline of the Periodic Table below, some elements are shown as numbers.

Which two numbers are metals in the same period?

• 1 and 2

• 1 and 7

• 3 and 5

• 5 and 6

C8.02 Group 1 Properties

Alkali Metals

​

​,density increases

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Multiple Choice

As we move down the periodic table, melting points and boiling points ________ down the group.

• increase

• decrease

• stable

• stay the same

Multiple Choice

However, group 1 elements' density _________ as we go down the group.

• increase

• decrease

• stable

• stays the same

Multiple Choice

Elements in Group 1 are so reactive that as we go down in the Periodic Table, the reactivity ________.

• increases

• decreases

• unreactive

• stabilizes

Fill in the Blanks

C8.03 Group VII Properties

Halogens

Group VII Properties - Google Drive

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Multiple Choice

As you move down the group, halogens' reactivity ________.

• 
  increases

• 
  doesn't change

• 
  

  decreases

• 
  shows no trend.

Multiple Choice

What is the trend in boiling point for noble gases?

• 
  There is no trend.

• Boiling point decreases down the group.

• Boiling point increases down the group.

• 
  

  All the boiling points are the same.

Multiple Choice

Elements in Group VII's reactivity ____________ down the group.

• increases

• decreases

• stable

• stays the same

Multiple Choice

Some properties of four elements, P, Q, R and S, are shown in the table.

Two of these elements are in Group I of the Periodic Table and two are in Group VII.

Which statement is correct?

• P is below R in Group I

• Q is above R in Group I

• Q is below S in Group VII

• R is below S in Group VII

Multiple Choice

Which statements about Group I and Group VII elements are correct?

1 In Group I, lithium is more reactive than potassium. 2 In Group VII, chlorine is more reactive than fluorine.

• A

• B

• C

• D

C8.04 Transition Elements

Transition Elements

Transition metals can also act as catalysts. This means that they can be added to a reaction to speed up without themselves being used up. Examples include iron as a catalyst for making ammonia in the Haber process and platinum and rhodium in a catalytic converter.

Multiple Choice

Which is NOT a characteristic/ property of transition metals?

• act as catalyst

• form coloured compounds

• high melting point

• low density

Multiple Choice

An element X has the two properties listed.

1. 1. it acts as a catalyst

   1. 2. it forms a colourless ions

Which of these properties suggest that X is a transition element?

• A

• B

• C

• D

Multiple Choice

An element has the following properties.

1. 1. it forms coloured compounds

2. 2. it acts as a catalyst

3. it melts at 1539⁰C

In which part of the periodic table is the element found?

• Group 1

• Group IV

• Group VII

• transition elements

Multiple Choice

Osmium is transition element.

Which row gives the expected properties of Osmium?

• A

• B

• C

• D

C8.05 Noble Gas

The Noble Gas

C8.05 Noble Gas

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Noble gases are particulary unreactive. The atoms of the noble gases do not combine with each other to form molecules or any form of structure. This is because they have a complete outer shell of eight electrons.

Multiple Choice

The table gives information about elements

Which element is a transition metal?

• A

• B

• C

• D

Multiple Select

What explains why do the elements in Noble Gas are unreactive or inert?

Select all that applies.

• their outher shell is already full of electrons

• because they are noble gases

• stable elements

• they no longer combine with each other or other atoms to form molecules

Multiple Choice

Two statements about noble gases are given.

1. 1. noble gases are reactive, monoatomic gases

2. 2. noble gases all have full outer shells of electrons

Which is correct?

• Both statements are correct and statement 2 explains statement 1

• Both statements are correct but statement 2 does not explain statement 1.

• Statement 1 is correct but statement 2 is incorrect.

• Statement 2 is correct but statement 1 is incorrect.

Multiple Choice

The Group 0 elements are unreactive. The gas used to fill balloons is ..............(X) . This gas is unreactive because it has .............(Y) electrons in its outermost shell. Which words correctly complete gaps X and Y?

• A

• B

• C

• D

Multiple Choice

The following statements are about elements in the Periodic Table.

1.Their atoms have a full outer shell of electrons.

2. They form basic oxides.

3. 3. They are found in Group 0.

4. 4. They are present in small quantities in the air.

6. Which statements are correct for the noble gases?

• 1, 2 and 3

• 1, 2 and 4

• 1, 3 and 4

• 2, 3 and 4

Multiple Choice

The noble gases, which are in Group 0 of the Periodic Table, are all very ..............(1) .

..............(2), one of these gases, is used to provide an inert atmosphere in lamps.

Another, ...........(3), is used for filling balloons because it is less dense than air.

Which words complete the sentences about noble gases?

• A

• B

• C

• D

This is the end of the lesson.

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