The Periodic Table And Covalent Bonding Flashcards Preview

Chemistry Module 4 > The Periodic Table And Covalent Bonding > Flashcards

Flashcards in The Periodic Table And Covalent Bonding Deck (12)
Loading flashcards...
1
Q

What don’t carbon dioxide and water do?

A

Conduct electricity

2
Q

What is a vertical column of elements in the Periodic table called?

A

A group

3
Q

Why do elements in the same group have similar chemical properties?

A

Because they have the same number of electrons in their outer shell

4
Q

What is a horizontal row of elements in the period table called?

A

A period

5
Q

Describe the main stages in the development of the classification of elements

A

Dobereiner - linked elements that had similar properties and found they have groups of three elements
Newlands - arranged the elements by increasing atomic weight
Mendeleev - refined Newlands’ ideas by putting all the known data for each element onto cards which he arranged in groups and periods in weight order based on their properties

6
Q

How do non-metals combine together?

A

By sharing electrons in pairs and this is called covalent bonding

7
Q

Describe carbon dioxide and water

A

Simple molecules with weak intermolecular forces between molecules

8
Q

Explain, in terms of structure and bonding, some of the physical properties of carbon dioxide and water

A
  • low melting points

- don’t conduct electricity

9
Q

Explain how further evidence confirmed Mendeleev’s ideas about the Periodic Table

A
  • confirmation of his predictions about unknown elements

- how investigations on atomic structure agreed with his ideas

10
Q

What does the period to which the element belongs corresponds to?

A

The number of shells of electrons it has

11
Q

What is ionic bonding?

A

Metals and non-metals combine by transferring electrons

12
Q

Recall that there are two types of bonding

A
  • ionic bonding between metals and non-metals

- covalent bonding between non-metals