SEMINAR GAPP2023

I am a gas that you need for burning. What am I?

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• OXYGEN
• NITROGEN

• HYDROGEN

• NEON

I am a most abundant gas that in the air. What am I?

• OXYGEN

• HYDROGEN

• NITROGEN

• HELIUM

Graphite is a form of myself. What am I?

• SILICON

• CARBON

• ARSENIC

• IRON

When people said "BONE", you will remind of me. What am I?

• LITHIUM

• SODIUM

• MAGNESIUM

• CALCIUM

People used me in a huge amount to produce steels. What am I?

• IRON
• PLUMBUM

• ALUMINIUM

• COPPER

People used me as disinfectant and the smell of pools will reminding you of me. What am I?

• BROMINE

• CHLORINE

• SULFUR

• SILICON

Instead of oxygen element, I'm also existed in the common sand. What am I?

• ARGENTUM

• ZINC

• SILICON

• COPPER

I am known as table salt. What am I?

• MgCl₂

• AgCl

• NaCl

• Cl₂

I am known as the laughing gas and they used me to fill in the balloon. What am I?

• Helium

• Hydrogen

• Carbon dioxide

• Oxygen

What is my name?

• Stopper

• Pipette

• Dropper

• Bulb