Welcome, everyone! Today, we're going to investigate whether liquids can conduct electricity. Can anyone remind me what we learned about good and poor conductors?

Excellent! Now, we will see if liquids like lemon juice can also conduct electricity. Who can tell me why we should never handle electrical appliances with wet hands?

Right! So let's test it. Remember, water is a good conductor when certain salts dissolve in it. Let's prepare our tester.

Now that we've built our testers, how do we use them to test lemon juice or vinegar?

Exactly! If the bulb glows, it means the liquid conducts electricity. So, what do we expect to see when testing lemon juice?

Great prediction! Now, let’s test it out and then discuss why some liquids might not cause the bulb to glow even when they conduct electricity.

What did you observe after testing all the liquids?

Right! Distilled water is pure and has fewer ions, which are necessary for conductivity. How does that relate to chemical effects?

Exactly, that’s a key point! When electric current passes through a conducting solution, it causes chemical changes. Let's recap our findings.

Why do you think understanding electrical conductivity in liquids is important?

Right again! It ties into many fields, especially in chemical engineering and electronics. Any final questions?

That's a great idea! Each state of matter has unique properties. Let’s plan more experiments!