Answer:
Pure compounds include elements and compounds where a combination of two or more pure substances is a mixture. Only one type of atom comes in the form of a pure element. Multiple atoms consist of a molecule and different atoms consist of a compound. These are all pure substances and individually.
Answer:
11
Explanation:
the atomic number is the same as the number of electrons
Answer:
C
Explanation:
You can see in the chemical equation that 7
are used up to produce 6