Endothermic or exothermic reactions

Endothermic vs Exothermic
In this lesson-up you will prepare for the practicum about  endothermic and exothermic reactions

Do this lesson-up before the practicum so you know what you can expect
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Slide 1: Tekstslide
Natuur, Leven en Technologie

In deze les zitten 11 slides, met interactieve quizzen en tekstslides.

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Endothermic vs Exothermic
In this lesson-up you will prepare for the practicum about  endothermic and exothermic reactions

Do this lesson-up before the practicum so you know what you can expect

Slide 1 - Tekstslide

when a chemical reaction needs heat, it's called endothermic

Slide 2 - Tekstslide

endothermic
- put heat in reaction
- stop heating -> reactions stops as well
- examples:
1. frying an egg
2. water evaporation
3. melting ice


Slide 3 - Tekstslide

What safety precausions do you need to take in the lab?
A
wear safety goggles
B
wear a labcoat and close it
C
tie your (long) hair back
D
all of them

Slide 4 - Quizvraag

What is a risk of long hair that is not tied back?

Slide 5 - Open vraag

exothermic reactions
- sometimes needs a little heat to start
- gives heat to enviroment. 
- does nog stop on its own unless reaction is over
Examples:
1. nuclear reaction
2. burning wood
3. combustion or explosion

Slide 6 - Tekstslide

chemical reactions that release thermal energy(heat) to the environment are called exothermic

Slide 7 - Tekstslide

what is this instrument
called?
A
bunsen burner with gasvalve
B
triflex with plate
C
tripod with gauze
D
graduated cilinder with water

Slide 8 - Quizvraag

In what position should the gas control and the air control be when you light your match to light up the bunsen burner?
A
gas control open air control closed
B
gas control closed air control open
C
gas control closed air control closed
D
gas control open air control open

Slide 9 - Quizvraag

In what position should the gas control and the air control be when you want a pause flame?
A
gas control open air control closed
B
gas control closed air control open
C
gas control closed air control closed
D
gas control open air control open

Slide 10 - Quizvraag

Are these reactions endothermic or exothermic
Endothermic reaction
Exothermic reaction
Frying an egg
Burning coals
Ice melting
photosynthesis
lighting a match

Slide 11 - Sleepvraag