# 3.4.2 Atomic structure part 2

ELECTRON
NUCLEUS
1 / 12
Slide 1: Sleepvraag
ScienceSecondary Education

In deze les zitten 12 slides, met interactieve quizzen en tekstslides.

Lesduur is: 50 min

## Onderdelen in deze les

ELECTRON
NUCLEUS

PROTONS
ELECTRONS
NEUTRONS
NO CHARGE
POSITIVE CHARGE
NEGATIVE CHARGE

#### Slide 3 -Tekstslide

Calculate the number of protons, neutrons and electrons in an atom of oxygen

#### Slide 5 -Tekstslide

If the abundance of three isotopes of oxygen are oxygen -16 is 99.7 %, oxygen -17 is 0.38 % and oxygen-18 is 0.20 % what is the average atomic mass of oxygen?
A
18
B
17
C
16
D
17.5

#### Slide 6 -Quizvraag

Using the abundance of lithium isotope predict the atomic mass of lithium atom
A
6.94
B
8.0
C
5.50
D
7.93

#### Slide 7 -Quizvraag

A sample of copper contains 69.17 % Cu-63 and 30.83 % of Cu-65. What is the average atomic mass of copper?

#### Slide 8 -Open vraag

Nitrogen contains 99.63 % N-14 and 0.37 % N-15. What is the average atomic mass of nitrogen

#### Slide 9 -Open vraag

Mass percentages.
What is the mass percentage of carbon in:

C11H22O11

#### Slide 10 -Open vraag

Thoughts about today's lesson

#### Slide 11 -Woordweb

Now go and do the exercises of paragraph 3.4