Spring Semester Final Crossword

2. Combination of two or more substances that are not chemically bonded.
5. A property of metals that allows them to be hammered or rolled into sheets.
6. A tiny unit of matter that cannot be divided further and still retain its properties.
7. Type of chemical bond formed through the transfer of electrons.
10. The distance between corresponding points on adjacent waves.
13. A chemical reaction that typically involves oxygen and produces heat and light.
14. Number of wave cycles that pass a point per second.
15. Number The number of protons in the nucleus of an atom, which determines the element.
17. Positively charged particle located in the nucleus of an atom.
18. Central part of an atom where protons and neutrons are concentrated.
22. The starting substances that undergo a chemical reaction.
23. (two words and plural) Elements in Group 18 that are unreactive due to full electron shells.
24. Number in a chemical formula that tells how many atoms of an element are in a molecule.
25. Subatomic particle that carries a negative charge and orbits the nucleus.

1. (two words)Group 1 elements with one valence electron and high reactivity.
3. Maximum distance the particles of a wave vibrate from their rest position.
4. The unit used to measure wave frequency.
8. The total number of protons and neutrons in an atom’s nucleus.
9. A mixture where individual substances are visibly distinct.
11. A mixture that appears uniform throughout.
12. A pure substance made from two or more different elements chemically combined.
16. (two words)Electrons in the outermost shell of an atom involved in bonding.
19. Particle in the nucleus of an atom that has no charge.
20. Substances formed as a result of a chemical reaction.
21. A bond formed when atoms share electrons.