M.C.Q.: Choose the correct answer(s) ✅

• 1. A reactant is:
• a consumed substance a substance that forms a substance that is not modified

• 2. A product is:
• a consumed substance a substance that forms a substance that is not modified

• 3. During a chemical transformation, mass:
• decreases does not vary increases is conserved

• 4. During a chemical transformation, the number of molecules:
• does not vary increases may change or remain unchanged, depending on the transformation

• 5. During a chemical transformation, the number of atoms:
• does not vary increases decreases

• 6. During a chemical transformation, the atoms of the reactants:
• rearrange to form the products disappear, and new atoms are created

📊 RESULT: