Environmental Science Crossword

2. The basic unit of a chemical element.
3. A compound that yields a greater amount of hydrogen ions when dissolved than is found naturally in pure water.
6. The second part of a chain in an ecosystem, they make their own food due to absorbing energy from the sun.
8. A web with different hierarchies in an ecosystem where each organism has a specific role.
9. Values that do not change over the course of an experiment.
11. A value that when changed impacts the Dependent variable and the experiments results.
15. A value that is kept constant to determine the relationship between the Dependent and Independent variables.
16. A position on the chain of an ecosystem where energy is transferred through consuming or being consumed by others.
18. A unique substance that cannot be broken down into similar substances.
19. The amount of protons that is contained in the nucleus of an atom.

1. A bond that is formed between two elements or compounds that have opposite charges.
4. A combination of two or more substances or elements.
5. A value that changes based on the Independent variable, it is the value being measured.
7. A bond that is formed when atoms share electrons among themselves
10. A level of hierarchy in an ecosystem through which energy is transferred.
11. A molecule that has an electric charge because of it gaining or losing electrons.
12. A scale that measures whether a substance is an acid or a base.
13. A compound that can accept hydrogen ions and yields less of them than pure water when dissolved.
14. The mass of an atom that makes up a chemical element.
17. The amount of energy passed between an animal when it consumes another or when it consumes food.