Question
Vinegar and baking soda are put in a beaker together, and they undergo a chemical reaction. Look at the picture. How do you know a chemical reaction is occurring?
(1 point)
Responses
Changes shape
Changes shape
Bubbles are produced
Bubbles are produced
Changes size
Changes size
There is no chemical reaction. This is a physical change.
There is no chemical reaction. This is a physical change.
Question 5
Using the same image of the vinegar and baking soda chemical reaction... A scientist finds that the total mass after the compounds react, is less than the sum of the masses before they react. Which 2 statements explain this observation.
(1 point)
Responses
Some of the mass has escaped as a gas.
Some of the mass has escaped as a gas.
Some of the mass was destroyed during the reaction.
Some of the mass was destroyed during the reaction.
Law of conservation of mass. Mass can not be created nor destroyed.
Law of conservation of mass. Mass can not be created nor destroyed.
There is no way the mass can be different.
There is no way the mass can be different.
Question 6
How does the balanced chemical equation below demonstrate the Law of Conservation of Mass?
(1 point)
Responses
It shows that the properties of the elements stay the same after the reaction.
It shows that the properties of the elements stay the same after the reaction.
It shows that all compounds remain bonded after the reaction.
It shows that all compounds remain bonded after the reaction.
It shows that no atoms have been gained or lost during the reaction.
It shows that no atoms have been gained or lost during the reaction.
It shows that only physical changes follow the Law of Conservation of Mass
(1 point)
Responses
Changes shape
Changes shape
Bubbles are produced
Bubbles are produced
Changes size
Changes size
There is no chemical reaction. This is a physical change.
There is no chemical reaction. This is a physical change.
Question 5
Using the same image of the vinegar and baking soda chemical reaction... A scientist finds that the total mass after the compounds react, is less than the sum of the masses before they react. Which 2 statements explain this observation.
(1 point)
Responses
Some of the mass has escaped as a gas.
Some of the mass has escaped as a gas.
Some of the mass was destroyed during the reaction.
Some of the mass was destroyed during the reaction.
Law of conservation of mass. Mass can not be created nor destroyed.
Law of conservation of mass. Mass can not be created nor destroyed.
There is no way the mass can be different.
There is no way the mass can be different.
Question 6
How does the balanced chemical equation below demonstrate the Law of Conservation of Mass?
(1 point)
Responses
It shows that the properties of the elements stay the same after the reaction.
It shows that the properties of the elements stay the same after the reaction.
It shows that all compounds remain bonded after the reaction.
It shows that all compounds remain bonded after the reaction.
It shows that no atoms have been gained or lost during the reaction.
It shows that no atoms have been gained or lost during the reaction.
It shows that only physical changes follow the Law of Conservation of Mass
Answers
GPT-4o mini
### Question 4
**How do you know a chemical reaction is occurring?**
- **Response:** Bubbles are produced.
### Question 5
**Which 2 statements explain the observation that the total mass after the compounds react is less than the sum of the masses before they react?**
- **Response:**
- Some of the mass has escaped as a gas.
- Law of conservation of mass. Mass cannot be created nor destroyed.
### Question 6
**How does the balanced chemical equation below demonstrate the Law of Conservation of Mass?**
- **Response:** It shows that no atoms have been gained or lost during the reaction.
**How do you know a chemical reaction is occurring?**
- **Response:** Bubbles are produced.
### Question 5
**Which 2 statements explain the observation that the total mass after the compounds react is less than the sum of the masses before they react?**
- **Response:**
- Some of the mass has escaped as a gas.
- Law of conservation of mass. Mass cannot be created nor destroyed.
### Question 6
**How does the balanced chemical equation below demonstrate the Law of Conservation of Mass?**
- **Response:** It shows that no atoms have been gained or lost during the reaction.