Question
Which observation most likely indicates that only a chemical change has taken place?(1 point)
Responses
The change cannot be reversed.
The change cannot be reversed.
States of matter changes.
States of matter changes.
A reaction occurs.
A reaction occurs.
The shape changes.
Responses
The change cannot be reversed.
The change cannot be reversed.
States of matter changes.
States of matter changes.
A reaction occurs.
A reaction occurs.
The shape changes.
Answers
Answer
Use the table of observed changes to answer the question.
Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed?
1 yes yes yes yes
2 no yes yes no
3 yes yes yes yes
4 no no no no
Which changes shown in the table are physical changes?
(1 point)
Responses
2 and 4
2 and 4
1 and 4
1 and 4
1 and 2
1 and 2
2 and 3
Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed?
1 yes yes yes yes
2 no yes yes no
3 yes yes yes yes
4 no no no no
Which changes shown in the table are physical changes?
(1 point)
Responses
2 and 4
2 and 4
1 and 4
1 and 4
1 and 2
1 and 2
2 and 3
Answer
Why is it a physical change to freeze water?(1 point)
Responses
Heat is released during the process.
Heat is released during the process.
A temperature change occurs.
A temperature change occurs.
The new and original substances are different.
The new and original substances are different.
Only a phase change occurs.
Responses
Heat is released during the process.
Heat is released during the process.
A temperature change occurs.
A temperature change occurs.
The new and original substances are different.
The new and original substances are different.
Only a phase change occurs.
Answer
Which option is an example of a chemical change?(1 point)
Responses
folding paper
folding paper
stretching a rubber band
stretching a rubber band
burning wood
burning wood
chopping vegetables
Responses
folding paper
folding paper
stretching a rubber band
stretching a rubber band
burning wood
burning wood
chopping vegetables
Answer
Which statement best describes the framework of government established by the Constitution?
(1 point)
Responses
The three branches of government defer the majority of power to the states.
The three branches of government defer the majority of power to the states.
A system of checks and balances keeps each of the three branches from having too much power.
A system of checks and balances keeps each of the three branches from having too much power.
The Separation of Powers calls for the House and Senate to be equally divided.
The Separation of Powers calls for the House and Senate to be equally divided.
The president is elected by a direct vote of the people.
(1 point)
Responses
The three branches of government defer the majority of power to the states.
The three branches of government defer the majority of power to the states.
A system of checks and balances keeps each of the three branches from having too much power.
A system of checks and balances keeps each of the three branches from having too much power.
The Separation of Powers calls for the House and Senate to be equally divided.
The Separation of Powers calls for the House and Senate to be equally divided.
The president is elected by a direct vote of the people.
Answer
What is meant by the basic principle popular sovereignty?
(1 point)
Responses
The government is set up as a constitutional republic.
The government is set up as a constitutional republic.
The people have the right to alter their government.
The people have the right to alter their government.
Congress has the right to regulate trade.
Congress has the right to regulate trade.
The president has the right to veto any bill that Congress has passed.
(1 point)
Responses
The government is set up as a constitutional republic.
The government is set up as a constitutional republic.
The people have the right to alter their government.
The people have the right to alter their government.
Congress has the right to regulate trade.
Congress has the right to regulate trade.
The president has the right to veto any bill that Congress has passed.
Answered by
GPT-4o mini
The observation that most likely indicates that only a chemical change has taken place is:
**A reaction occurs.**
This is because a chemical change typically involves a reaction leading to the formation of new substances, which is a key feature differentiating it from a physical change.
**A reaction occurs.**
This is because a chemical change typically involves a reaction leading to the formation of new substances, which is a key feature differentiating it from a physical change.
Answered by
GPT-4o mini
The changes shown in the table that are physical changes are:
**2 and 4.**
Change 2 does not react with another substance, even though there is a temperature change and gas, sound, or light is produced, which indicates that it could be a physical change. Change 4 has no reactions and no signs of a change, indicating it is a physical change as well. Changes 1 and 3 involve a reaction and the formation of new substances, which indicates they are chemical changes.
**2 and 4.**
Change 2 does not react with another substance, even though there is a temperature change and gas, sound, or light is produced, which indicates that it could be a physical change. Change 4 has no reactions and no signs of a change, indicating it is a physical change as well. Changes 1 and 3 involve a reaction and the formation of new substances, which indicates they are chemical changes.
Answered by
GPT-4o mini
The reason freezing water is considered a physical change is:
**Only a phase change occurs.**
In this process, water changes from a liquid to a solid (ice) without altering its chemical composition. The water remains H₂O before and after the change, which is characteristic of a physical change.
**Only a phase change occurs.**
In this process, water changes from a liquid to a solid (ice) without altering its chemical composition. The water remains H₂O before and after the change, which is characteristic of a physical change.
Answered by
GPT-4o mini
An example of a chemical change is:
**burning wood.**
When wood is burned, it undergoes a chemical reaction that produces new substances (such as ash, carbon dioxide, and water vapor), whereas the other options involve physical changes that do not alter the chemical composition of the materials.
**burning wood.**
When wood is burned, it undergoes a chemical reaction that produces new substances (such as ash, carbon dioxide, and water vapor), whereas the other options involve physical changes that do not alter the chemical composition of the materials.
Answered by
GPT-4o mini
The statement that best describes the framework of government established by the Constitution is:
**A system of checks and balances keeps each of the three branches from having too much power.**
This system is a fundamental aspect of the Constitution, ensuring that the legislative, executive, and judicial branches can each limit the powers of the others, preventing any one branch from becoming too powerful.
**A system of checks and balances keeps each of the three branches from having too much power.**
This system is a fundamental aspect of the Constitution, ensuring that the legislative, executive, and judicial branches can each limit the powers of the others, preventing any one branch from becoming too powerful.
Answered by
GPT-4o mini
The statement that best explains the basic principle of popular sovereignty is:
**The people have the right to alter their government.**
Popular sovereignty is the doctrine that the government's authority comes from the consent of the governed, meaning that the people have the ultimate power to shape and change their government as they see fit.
**The people have the right to alter their government.**
Popular sovereignty is the doctrine that the government's authority comes from the consent of the governed, meaning that the people have the ultimate power to shape and change their government as they see fit.