part b: technology-enhanced (multiple select)
7. select two statements that are supported by the passage.
☐ a. zombie fires can burn underground for long periods of time.
☐ b. zombie fires produce no heat or smoke.
☐ c. during burning, some matter becomes gases like co₂ and water vapor.
☐ d. matter disappears during combustion.
☐ e. peat is made mostly of metal and minerals.
part c: constructed response (leap-style)
8. in 2–3 sentences, explain what happens to matter during combustion. use evidence from the passage.

9. write a claim-evidence-reasoning (cer) response to the question below: (answer on separate sheet of paper with proper heading. failure to follow instructions will result in a 0)
prompt:
using evidence from the burning fuel investigation and the passage, explain how matter and energy flow during combustion and how this relates to zombie fires.
your response must include:
- claim answering the question
- at least 2 pieces of evidence from the investigation/passage
- reasoning explaining matter conservation + energy transfer
- connection to zombie fires

Question

part b: technology-enhanced (multiple select)
7. select two statements that are supported by the passage.
☐ a. zombie fires can burn underground for long periods of time.
☐ b. zombie fires produce no heat or smoke.
☐ c. during burning, some matter becomes gases like co₂ and water vapor.
☐ d. matter disappears during combustion.
☐ e. peat is made mostly of metal and minerals.
part c: constructed response (leap-style)
8. in 2–3 sentences, explain what happens to matter during combustion. use evidence from the passage.

9. write a claim-evidence-reasoning (cer) response to the question below: (answer on separate sheet of paper with proper heading. failure to follow instructions will result in a 0)
prompt:
using evidence from the burning fuel investigation and the passage, explain how matter and energy flow during combustion and how this relates to zombie fires.
your response must include:
- claim answering the question
- at least 2 pieces of evidence from the investigation/passage
- reasoning explaining matter conservation + energy transfer
- connection to zombie fires

Accepted Answer

### Part B (Question 7)
# Brief Explanations:
To solve this, we analyze each option:
- Option A: If the passage discusses zombie fires burning underground (like in peat) for long, this is supported.
- Option B: Fires produce heat/smoke, so B is wrong.
- Option C: Combustion converts matter to gases (e.g., $CO_2$, water vapor), so C is supported.
- Option D: Matter is conserved, so D is wrong.
- Option E: Peat is organic (plant matter), not metal/minerals, so E is wrong.
# Answer:
A. Zombie fires can burn underground for long periods of time, C. During burning, some matter becomes gases like $CO_2$ and water vapor

### Part C (Question 8)
# Brief Explanations:
From combustion principles (and passage evidence), matter changes form. It doesn't disappear but converts to gases (e.g., $CO_2$, water vapor) and may leave solid residues. This follows conservation of matter.
# Answer:
During combustion, matter does not disappear but transforms: some becomes gaseous (like $CO_2$ and water vapor), and some may remain as solid residues (e.g., ash). This aligns with the law of conservation of matter, as matter is rearranged, not lost.

### Part C (Question 9 - CER Response)
# Brief Explanations:
- **Claim**: During combustion, matter is conserved (rearranged into gases/residues) and energy (chemical to thermal) transfers, enabling zombie fires to persist.
- **Evidence**: 1) Combustion produces gases ($CO_2$, water vapor) and residues (ash). 2) Zombie fires burn underground (e.g., in peat) for long.
- **Reasoning**: Matter conservation: atoms rearrange (e.g., fuel + $O_2$ → $CO_2$ + $H_2O$ + ash). Energy transfer: chemical energy in fuel becomes thermal energy (heat), sustaining the fire.
- **Connection to Zombie Fires**: Zombie fires (e.g., in peat) use stored organic matter (fuel). The conserved matter (gases, residues) and energy (heat) allow them to smolder underground for extended periods, as the fuel (peat) slowly combusts, re - arranging matter and transferring energy.
# Answer:
### Claim
During combustion, matter is conserved (rearranged into gaseous and solid forms) and energy is transferred (chemical to thermal), which allows zombie fires to persist underground for long periods.

### Evidence
1. From combustion processes (and passage - related investigations), when fuel burns, it produces gases like $CO_2$ and water vapor, and solid residues such as ash. 2. Zombie fires are described as being able to burn underground (e.g., in peat - rich areas) for extended periods.

### Reasoning
Matter is conserved during combustion because the atoms in the fuel and oxygen are rearranged to form new substances (gases, residues) — no matter is created or destroyed (law of conservation of matter). Energy is transferred as the chemical energy stored in the fuel is converted to thermal energy (heat) during the reaction. This heat energy sustains the combustion process.

### Connection to Zombie Fires
Zombie fires, like those burning in peat, rely on the slow combustion of organic matter (peat) as fuel. The conservation of matter (rearrangement into gases and residues) and the transfer of energy (chemical to thermal) from the peat's combustion allow these fires to smolder underground for long durations. The heat from the energy transfer keeps the reaction going, and the slow - burning nature (due to the fuel's composition and underground environment) lets them persist, even seemingly "dormant" at times, before reigniting or continuing to burn.

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QUESTION IMAGE

Question

Explanation:

Part B (Question 7)

Answer:

Part C (Question 8)