Grade 8

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Slide 1: Slide

ScienceSecondary EducationAge 12

This lesson contains 22 slides, with interactive quizzes and text slides.

Lesson duration is: 40 min

Items in this lesson

Slide 1 - Slide

Slide 2 - Slide

Slide 3 - Slide

Slide 4 - Slide

Slide 5 - Slide

Slide 6 - Slide

Can explain why pure water does not conduct electricity

Can compare strong and weak electrolytes

Can investigate the factors that affect the conductivity of liquids

Extended timeline to explain conductivity of liquids

Slide 7 - Poll

Slide 8 - Slide

Slide 9 - Slide

Slide 10 - Slide

padlet.com

Slide 11 - Link

Slide 12 - Slide

Among the following which is an electrolyte

Sugar solution

salt solution

Distilled water

Vegetable oil

Slide 13 - Quiz

1)A student makes a circuit as shown .He notices that the bulb does not glow. What changes he can make to make it glow

Add a pinch of sugar

Cool the water in the beaker

Heat the water

Add a pinch of salt

Slide 14 - Quiz

2)A student makes an electric circuit as shown
The student notices that the bulb in the circuit is not glowing even though the circuit is complete. His friend advises him to use a LED at the place of the bulb. Why an LED is preferred over bulb in the circuit?

LEDs can glow even when a weak current flow in the circuit

LEDs consume more energy than a bulb.

LEDs eliminate the use of the battery in the circuit.

LEDs are brighter than bulbs

Slide 15 - Quiz

padlet.com

Slide 16 - Link

Slide 17 - Slide

Slide 18 - Slide

Slide 19 - Slide

Slide 20 - Slide