Final Answer:
1. An element is a pure substance made of only one type of atom.
2. A compound is a substance formed when two or more different elements chemically bond together.
3. On the periodic table, you find elements (each represented by a symbol and atomic number).
4. An element’s role in a chemical reaction depends on its electron arrangement — especially how easily it gains, loses, or shares electrons. Compounds form when elements react to achieve stable electron configurations (e.g., ionic or covalent bonds).
5. An element is a substance that cannot be broken down into simpler substances by chemical means.
6. A compound behaves differently from its constituent elements because the atoms are chemically bonded, changing physical and chemical properties (e.g., sodium (metal) + chlorine (gas) → sodium chloride (edible salt)).
7. A binary compound is a chemical compound made of exactly two different elements (e.g., CO₂, NaCl).
Parent Tip: Review the logic above to help your child master the concept of element or compound worksheet.
