crossword 1

2. fundamental truths or rules that guide understanding or behavior.
6. a pure substance made of only one type of atom.
8. the way in which parts or elements are combined or arranged.
10. relating to the practical use of scientific knowledge for tools and systems.
11. relating to or based on the methods and principles of science.
13. anything that has mass and takes up space.
15. a repeated or regular arrangement, form, or sequence.
16. the force applied to a surface per unit area.
18. characteristics or qualities of a substance or object.
19. a combination of two or more substances that are not chemically bonded.

1. positively charged particles found in the nucleus of an atom.
3. the branch of science that studies substances, their properties, and how they interact.
4. in a suitable or proper way for the situation.
5. the smallest units of matter that retain the properties of an element.
7. the surroundings or conditions in which a person, animal, or object exists.
9. neutral particles found in the nucleus of an atom.
12. to carry out an inquiry or study to discover facts or information.
13. groups of two or more atoms bonded together.
14. integrating knowledge and methods from multiple disciplines to solve complex problems.
17. a scientific procedure to test a hypothesis or discover new information.