Systems & Scale Review

Do you think the oxygen in the water you drink today, will still be oxygen in 1000000 years?

• Yes
• No

Which of these is an atom?

• Water
• Glucose
• CO₂
• Carbon

Which of these is a molecule only?

• Water
• Carbon
• Nitrogen
• Oxygen

If someone gains atoms, do they gain mass?

• Yes
• No

When a match burns, where does the energy come from?

• Air
• Striking the match
• Wood of the match
• Water Vapor

After the flame goes out, does the energy still exist?

• Yes
• No

When a match burns it weighs less, where does the mass go?

• Air
• Heat & Light Energy
• Soil
• Mass was destroyed

Which of the following is organic?

• Salt
• Soil
• Meat
• CO₂

Which of the following are inorganic?

• Meat
• Sugar
• CO₂
• Leaves on a tree

Air has mass

• True
• False