- Element: A pure substance made of only one type of atom, represented by a single symbol (e.g., O₂, Na).
- Compound: A substance formed when two or more different elements are chemically bonded together, represented by a chemical formula with multiple elements (e.g., H₂O, NaCl).
- Mixture: A combination of two or more different substances that are not chemically bonded, which can be separated physically (e.g., air, salt water).
- For diagram representation:
- Element: All shapes are identical (e.g., all triangles).
- Compound: Two or more different shapes bonded together in a fixed ratio (e.g., one triangle bonded to two circles).
- Mixture: Two or more different shapes not bonded, randomly mixed (e.g., triangles and circles scattered together).
Parent Tip: Review the logic above to help your child master the concept of molecules and compounds worksheet.
