Which of the following is considered acidic?(1 point)
Responses
Vinegar
Vinegar
Lime Water
Lime Water
Soap
Soap
Ammonia
5 answers
Vinegar
The chemical formula for carbonic acid is H2CO3
. How many compounds are represented by this formula?(1 point)
Responses
2
2
3
3
6
6
1
. How many compounds are represented by this formula?(1 point)
Responses
2
2
3
3
6
6
1
1
A student cuts some fabric into two pieces. Is this change physical or chemical?(1 point)
Responses
It is a physical change because there is no reaction.
It is a physical change because there is no reaction.
It is a physical change because the process is reversible.
It is a physical change because the process is reversible.
It is a chemical change because the size changes.
It is a chemical change because the size changes.
It is a chemical change because there is no phase change.
Responses
It is a physical change because there is no reaction.
It is a physical change because there is no reaction.
It is a physical change because the process is reversible.
It is a physical change because the process is reversible.
It is a chemical change because the size changes.
It is a chemical change because the size changes.
It is a chemical change because there is no phase change.
It is a physical change because there is no reaction.