Across
- 1. Important for energy transfer in cells (ATP). Found in bones and teeth. Used in fertilizers. Glows in the dark in some forms.
- 5. A fundamental substance made up of only one type of atom.
- 6. Essential for transporting oxygen in blood. Found in red meat and spinach. Used to make steel. Magnetic metal.
- 7. Occupies space and has mass.
- 9. Can be physical or chemical.
Down
- 1. Molecule or atom.
- 2. _____ of matter.
- 3. Trace element that acts as an antioxidant. Helps protect cells from damage. Found in nuts, especially Brazil nuts. Important for thyroid health.
- 4. The basic building block of matter and the smallest unit of a chemical element that retains its chemical properties.
- 8. The capacity to do work or cause change.