13.3 Trends across a period

Lesson 13.3 Trends across a period
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Slide 1: Tekstslide
ChemSecondary Education

In deze les zitten 22 slides, met interactieve quizzen, tekstslides en 1 video.

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Lesson 13.3 Trends across a period

Slide 1 - Tekstslide

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Slide 2 - Poll

Slide 3 - Tekstslide

What happens to the atomic size or atomic radius across a period?
A
increases
B
decreases
C
the same

Slide 4 - Quizvraag

Slide 5 - Tekstslide

Slide 6 - Tekstslide

Transition elements are very hard and strong.
TRUE
FALSE

Slide 7 - Poll

Transition elements are poor conductors of heat and electricity.
TRUE
FALSE

Slide 8 - Poll

Transition elements have very high melting points and are highly dense materials.
TRUE
FALSE

Slide 9 - Poll

Transition elements form coloured compounds.
TRUE
FALSE

Slide 10 - Poll

Transition elements have more than one oxidation states or numbers.
TRUE
FALSE

Slide 11 - Poll

Oxidation number (variable valency)
  • a number given to show whether an element has been oxidised or reduced 
  • oxidation number of a simple ion is simply the charge on the ion

Slide 12 - Tekstslide

Why do transition elements have more than one oxidation number?

Slide 13 - Open vraag

Transition elements, as elements or in compounds, are often used as catalysts.
TRUE
FALSE

Slide 14 - Poll

Compounds containing transition elements in different oxidation states will have different properties and colours.
TRUE
FALSE

Slide 15 - Poll

Slide 16 - Tekstslide

Which of the following elements are not transition metals aside from zinc?
A
gold
B
silver
C
iron
D
scandium

Slide 17 - Quizvraag

Slide 18 - Video

Uses of Transition Metals
  • Chromium - corrosion resistance 
  • Tungsten - incandescent bulb filaments
  • Steel - nails
  • Vanadium -spanner

Slide 19 - Tekstslide

Slide 20 - Tekstslide

Uses of Transition Metals
  • Silver - cutlery
  • Gold - jack plugs
  • Copper - pipe joints
  • Iron - magnet
  • Titanium - camera body
  • Chromium - plated balls

Slide 21 - Tekstslide

Rate your understanding of the topic using the scale below.
15

Slide 22 - Poll