Across
- 5. - A gas necessary for human respiration.
- 7. - Pure substances made of only one type of atom.
- 10. table - A chart that organizes chemical elements by atomic number.
- 11. - A substance with a pH below 7.
- 13. - A process in which substances change to form new substances.
- 14. A molecule that carries genetic information.
Down
- 1. - A glass container used in science experiments.
- 2. - The smallest units of an element that retain its properties.
- 3. - A metallic element with the symbol Fe.
- 4. - A measurement of how hot or cold something is.
- 6. - A chemical element with the symbol Ne.
- 8. - A precious metal with the chemical symbol Au.
- 9. - The movement of particles from an area of high concentration to low concentration.
- 12. - A laboratory container used for mixing or heating liquids.