🧪 MCQ: Choose the correct answer(s) ✅

• 1. Charcoal (carbon) can burn in:
• air pure dinitrogen pure dioxygen pure carbon dioxide

• 2. When a piece of charcoal burns:
• its volume decreases its mass decreases its length (or width) decreases

• 3. When charcoal burns in a jar of dioxygen, we observe:
• a flame 🔥 an increase in temperature 🌡️ the appearance of a transparent liquid

• 4. Charcoal may stop burning if:
• there is no charcoal left the amount of dioxygen is insufficient 🫧 the temperature is too high

• 5. When charcoal burns, it forms:
• carbon dioxygen carbon dioxide 💨

• 6. Limewater turns cloudy in the presence of:
• a piece of charcoal dioxygen carbon dioxide 🧪

📊 RESULT: