Answer:
All elements are pure substances. Sugar, salt, and baking soda are pure substances that are compounds
Explanation:
Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances.
Tin, sulfur, and diamond are examples of pure substances that are chemical elements. All elements are pure substances. Sugar, salt, and baking soda are pure substances that are compounds. Examples of pure substances that are crystals include salt, diamond, protein crystals, and copper sulfate crystals.