Chemistry Terms

2. A combination of atoms that link together
4. An element that isn’t a metal. Can break easily and can’t conduct electricity or heat
8. Cause (a substance) to be deposited in solid form from a solution
12. A mark or character used as a conventional representation of a element
13. Any of the gaseous elements helium, neon, argon, krypton, xenon, and radon of the periodic table
14. The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table
16. Atomic particles found in the nucleus of an atom and carry a positive charge
17. A form of matter that may not be further broken down using any chemical means
18. Absorption of heat
19. A thing that is composed of two or more separate elements; a mixture
20. A substance that takes part in and undergoes change during a reaction.
22. In each period (horizontal row), the atomic numbers increase from left to right
24. Russian chemist and inventor
26. Center of an atom

1. A substance consisting of atoms which all have the same number of protons
3. Release of heat
5. Regions of space outside the nucleus of an atom where an electron may exist
6. Mass in an object is neither created nor destroyed by chemical reactions or physical transformations
7. An element that can conduct electricity and heat. Is malleable and ductile
9. A group is a column of elements in the periodic table of the chemical elements
10. The mass of an atom of a chemical element
11. Electrons in the outermost energy level of an atom
13. Nobel Prize-winning research on the structure of atoms
15. Substance formed from chemical reactions
21. Atomic particles found in the nucleus of an atom and carry no electrical charge
23. Atomic particles that move around the nucleus of an atom and carry a negative charge
25. An element that has properties of metals and nonmetals