When hydrogen gas burns in the presence of oxygen, atoms are rearranged and a new substance is formed. Because a new substance is formed, which of these statements must BEST describe what happens?(1 point)
Responses
The properties of the new substance are different, so a physical change took place.
The properties of the new substance are different, so a physical change took place.
The properties of the new substance are the same, so a physical change took place.
The properties of the new substance are the same, so a physical change took place.
The properties of the new substance are different, so a chemical change took place.
The properties of the new substance are different, so a chemical change took place.
The properties of the new substance are the same, so a chemical change took place.
The properties of the new substance are the same, so a chemical change took place.
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1 answer
The best statement that describes what happens when hydrogen gas burns in the presence of oxygen is:
The properties of the new substance are different, so a chemical change took place.
This is because burning hydrogen in oxygen produces water vapor (H₂O), which has different properties than hydrogen or oxygen alone, indicating a chemical change has occurred.
