When hydrogen gas burns in the presence of oxygen, atoms are rearranged and a new substance is formed. Which of these statements BEST describes 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 different, so a chemical change took place.
Consider the reaction represented by the space-fill models shown. Drag the correct label to each box.
Blank 1 represents the substance(s) on the left.
Blank 2 represents the arrow in the middle.
Blank 3 represents the substance(s) on the right.
Without the provided space-fill models, I cannot accurately determine the labels for each blank. Please provide the space-fill models or further information for me to assist you.
Consider the reaction represented by the space-fill models shown. Drag the correct label to each box.
Blank 1 represents the substance(s) on the left.
Blank 2 represents the arrow in the middle.
Blank 3 represents the substance(s) on the right.
::reaction occurs ::product(s) ::physical change ::ball and stick ::reactant(s)
Based on the given information, we can fill in the blanks as follows:
Blank 1 represents the substance(s) on the left, and it is labeled "Reactant(s)".
Blank 2 represents the arrow in the middle, and it is labeled "Reaction occurs".
Blank 3 represents the substance(s) on the right, and it is labeled "Product(s)".
Finally, based on the given choices, we can conclude that since the properties of the new substance(s) are different, this represents a chemical change rather than a physical change.
The correct answer is:
The properties of the new substance are different, so a chemical change took place.
The correct statement in this case is "The properties of the new substance are different, so a chemical change took place."
When hydrogen gas (H2) burns in the presence of oxygen (O2), they undergo a chemical reaction called combustion. The hydrogen atoms and oxygen atoms rearrange themselves to form water (H2O). Water has different properties compared to hydrogen gas and oxygen gas, such as being a liquid at room temperature and having different chemical and physical properties. Therefore, a chemical change takes place during this reaction.