Asked by No one
Here are the answers to the U6L10 Chemical Change Unit Test for 7th Grade
1. chlorine (Cl)
2. They have similar reactivity.
3. burning wood
4. It is a physical change because there is no reaction.
5. They form new substances.
6. it shows that no atoms have been gained or lost during the reaction
7. The Law of Conservation of mass says that matter is neither created nor destroyed. So, we start with12.7 g + 3.2 g = 15.9 g for the reactants which means we must have 15.9 g for the products. Remember it's the products of the reaction so the scientist must know that Cu2S is the only product.
Number 7 you need to change it up a little bit
1. chlorine (Cl)
2. They have similar reactivity.
3. burning wood
4. It is a physical change because there is no reaction.
5. They form new substances.
6. it shows that no atoms have been gained or lost during the reaction
7. The Law of Conservation of mass says that matter is neither created nor destroyed. So, we start with12.7 g + 3.2 g = 15.9 g for the reactants which means we must have 15.9 g for the products. Remember it's the products of the reaction so the scientist must know that Cu2S is the only product.
Number 7 you need to change it up a little bit
Answers
Answered by
Rawr
I got a 100!! Ty
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.