Answer:
chemical change, or chemical reaction.
Explanation:
A change in matter that produces one or more new substances is a chemical change, or chemical reaction. In a chemical change, atoms rearrange to form new substances, which results in different physical properties, as well. ( you could have looked it up on google lol )
Answer: the answer would be CaCI2
Explanation: this was one of my exam questions i got right. :)
Answer:
4
Explanation:
You know this by looking at the number of protons and electrons which represents the atomic number.
Answer is d.. Economic concerns may prevent it from solving problems.
