Across
- 2. A structure made of different tissues that performs a function
- 3. A substance made of two or more atoms chemically bonded
- 6. A group of cells working together
- 8. Body system that transports oxygen and nutrients
- 10. A type of element that is shiny and conducts electricity
- 13. This table organizes all known elements
- 14. A structure within a cell that has a specific function
- 15. Organelle that produces energy (ATP) for the cell
- 16. A type of element that is dull and brittle
- 17. The smallest particle of an element
- 19. A substance made of only one type of atom
- 20. Jelly-like fluid inside a cell
- 22. Body system that breaks down food
- 23. Two or more substances not chemically bonded
Down
- 1. Organelle where photosynthesis happens
- 4. A tool used to magnify cells
- 5. The variable you measure in an experiment
- 7. A group of atoms bonded together
- 9. Body system that helps you breathe
- 11. A standard used for comparison in an experiment
- 12. A testable prediction written as “If...then...”
- 16. The part of a cell that contains DNA
- 18. The variable you change in an experiment
- 21. Clue