Unit 7.3 and important questions 7.2

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Slide 1: Diapositive
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Cette leçon contient 35 diapositives, avec quiz interactifs et diapositives de texte.

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Slide 3 - Diapositive

How do I recognize a molecular substance?
A
Formula contains kinds of atoms of metals and non-metals
B
Formula contains kinds of atoms of non-metals
C
All oxides are a molecular substance
D
By holding a magnete near the substance

Slide 4 - Quiz

Molecular substances cannot conduct electricity. How come?
A
You're testing the wrong state of substance
B
They consist of molecules
C
They consist of uncharged particles
D
They need water to be able to conduct electricity.

Slide 5 - Quiz

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Which substance has the strongest Van der Waals bonding?
A
left
B
middle
C
right
D
I don't know

Slide 9 - Quiz

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Slide 11 - Diapositive

What is an atomic bond?
A
The line between atoms
B
a shared pair of elektrons
C
Atoms bonded together
D
covalence

Slide 12 - Quiz

Look in the periodic table: What is the covalence of nitrogen?
A
1
B
2
C
3
D
4

Slide 13 - Quiz

Look in the periodic table: What is the covalence of sulfur?
A
1
B
2
C
3
D
4

Slide 14 - Quiz

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Question 7a: What is the name of a mixture of metals?
A
Alley
B
Alloy
C
Aloi
D
Alloj

Slide 20 - Quiz

Question 7b: What is the composition of duralumin?
A
alloy of cupper and magnesium
B
alloy of cupper and calcium
C
alloy of cupper and aluminium
D
alloy of cupper and cadmium

Slide 21 - Quiz

Question 7c: Explain whether pans of duralumin can be used for induction cooking?
A
Yes, you can, these pans are very sustainable
B
Yes, the melting range is very high
C
No, the pan will melt
D
No, aluminium isn't magnetic

Slide 22 - Quiz

Question 9
A
metallic lattice of cupper will contain the smaller Sn atoms
B
metallic lattice of cupper will contain the larger Sn atoms
C
metallic lattice of bronze will contain the smaller Sn atoms
D
metallic lattice of bronze will contain the larger Sn atoms

Slide 23 - Quiz

Question 10a

Slide 24 - Carte mentale

Question 10b

Slide 25 - Carte mentale

Question 12a: atomic number of Zinc
A
65
B
18
C
30
D
20

Slide 26 - Quiz

Question 12a: the group in the periodic table of Silver
A
10
B
11
C
12
D
13

Slide 27 - Quiz

Question 12c
A
A
B
B
C
C
D
D

Slide 28 - Quiz

Question 12d: which of these is a property of matter?
A
Mass
B
11m high and volume of 24m3
C
calciumsulfaatdihydraat
D
density

Slide 29 - Quiz

Question 13: Difference at micro level of mixture of two metal powders and an alloy of these two metals
A
In a mixture of metal powders the atoms are mixed
B
In an alloy the metals are mixed evenly
C
In an alloy the metals are mixed at atomic level
D
A mixture of metal powders demixes

Slide 30 - Quiz

Question 14
A
(45*12.3)/100=5.5
B
(100/12.3)/45=0.18
C
(12.3/45)*100=27.3
D
45/12.3=3.7

Slide 31 - Quiz

Question 15a
A
Below 97.5
B
Above 97.5
C
Between 97.5 and 883
D
Above 883

Slide 32 - Quiz

Question 15b
A
Foam
B
water
C
sand
D
fire blanket

Slide 33 - Quiz

Question 15c
A
combustion
B
decomposition
C
separation method
D
acid-base

Slide 34 - Quiz

Question 15d
A
Formation of hydrogen gas
B
Sodium explodes
C
Water evaporates and transports the fire
D
The water transports the sodium

Slide 35 - Quiz