3.1. The atomic model lesson 2

 3.1. The atomic model - isotopes
3. The structure of substances
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Slide 1: Slide
ScheikundeMiddelbare schoolhavo, vwoLeerjaar 3

This lesson contains 17 slides, with interactive quizzes and text slides.

Items in this lesson

 3.1. The atomic model - isotopes
3. The structure of substances

Slide 1 - Slide

Atomic model
An atom is composed of protons, neutrons and electrons.
The 1+ charged protons (p) and the neutral neutrons (n) are in the atomic nucleus
The 1− charged electrons (e-) are in a cloud around the atomic nucleus.

Slide 2 - Slide

Number of particles

  • atomic number = number of protons
    (determines type of atom)
  • number of electrons = number of protons (no charge)
  • mass number = number of protons + number of neutrons


Slide 3 - Slide

Isotopes
The same element - different mass

Same number of protons; different number of neutrons

Slide 4 - Slide

Other notation: P-31 
Notation of isotopes

Slide 5 - Slide

Isotopes

Slide 6 - Slide

Slide 7 - Slide

Types of substances
Type
Consist of
Metal
metal-atoms
Molecular substance
non-metal atoms
Salt
metal- and non-metal atoms

Slide 8 - Slide

Types of substances
Type
Solid
Liquid
Dissolved in water
Metal
yes
yes
-
Molecular substance
no
no
no
Salt
no
yes
yes

Slide 9 - Slide

What type of substance conducts electricity at the solid phase?
A
Metals
B
Salts
C
Molecular substances

Slide 10 - Quiz

What type of substance consists of a metal and a non-metal
A
Molecular substances
B
Metals
C
Salts

Slide 11 - Quiz

Sodium has atomic number 11 and mass number 24. How many protons does sodium have?
A
11
B
12
C
23
D
34

Slide 12 - Quiz

Sodium has atomic number 11 and mass number 24. How many electrons does sodium have?
A
11
B
12
C
13
D
34

Slide 13 - Quiz

Sodium has atomic number 11 and mass number 24. How many neutrons does sodium have?
A
11
B
12
C
13
D
24

Slide 14 - Quiz

When a neutron joins the nucleus then ...
A
the atom number becomes higher
B
the atom number becomes lower
C
the mass number becomes higher
D
the mass number becomes lower

Slide 15 - Quiz

N-14 has 7 protons and 7 neutrons.
C-14 has 6 protons and 8 neutrons.
N-14 and C-14 are isotopes
A
true
B
false

Slide 16 - Quiz

Slide 17 - Slide