- Picture's number: 1
- Name of the object: Water with ice
- Element or compound?: Compound
- Name of the element(s) or name of the compound(s) the object is made of: H₂O
- How many kinds of elements or compounds do you have?: One
- Picture's number: 2
- Name of the object: Gold ring
- Element or compound?: Element
- Name of the element(s) or name of the compound(s) the object is made of: Au
- How many kinds of elements or compounds do you have?: One
- Picture's number: 3
- Name of the object: Pencil lead (graphite)
- Element or compound?: Element
- Name of the element(s) or name of the compound(s) the object is made of: C
- How many kinds of elements or compounds do you have?: One
Definition: A pure substance is a material that has a constant composition and consistent properties throughout, made up of only one type of element or compound.
Parent Tip: Review the logic above to help your child master the concept of pure substances and mixtures worksheet.