Across
- 6. -One of the environmental issue
- 8. -a substance that starts a chemical reaction
- 9. has the properties of that element
- 10. -is the breaking down or dissolving of rocks and minerals on Earth’s surface.
- 13. the solid earth.
- 14. -the protective blanket of gases
- 16. -is the smallest particle of an element that
- 17. -is a common chemical substance on planet Earth.
- 19. -is the ability to do work
- 21. -occurs as a gas which makes up 78 percent of the atmosphere and that forms a part of all living tissues
- 22. -is the study of energy
- 24. -comprises all types of water resources.
- 25. -the concentration of
- 26. -is a substance that consists of two or more elements
- 27. -the sum of all the biochemical reactions in an organism
- 29. -is the outer mantle
Down
- 1. -is anything that takes up space and has mass.
- 2. -is the removal of soluble material from a substance such as soil or rock through the percolation of water.
- 3. -a substance that forms as a result of a chemical reaction
- 4. -is defined as ametabolic process wherein the living cells of an organism obtains energy
- 5. -It enters the blood from the lungs and travels to the tissues.
- 7. -KNOWLEDGE
- 9. -the chemical element of atomic number 16
- 11. -occurs when there is more water than land can absorb.
- 12. -Biological element
- 15. -highly flammable diatomic gas.
- 17. -is done when force is applied to an object over a distance
- 18. -Cultural element
- 20. -the state of one who lacks a usual or socially acceptable amount of money or material possessions
- 23. -Is a pure substance
- 24. ions in a solution
- 26. -is the main element in organic compounds
- 28. -Where life operates.