Unit 5 Review Crossword Puzzle

2. A substance consisting of atoms with the same number of protons in their nuclei, characterized by its unique chemical properties.
4. Electrically charged particles formed when an atom gains or loses electrons.
6. Elements in Group 18 of the periodic table, including helium, neon, argon, krypton, xenon, and radon, known for their stable and unreactive nature.
8. The overall electric charge of an object or particle, calculated by the sum of the individual charges.
10. Subatomic particles with no electric charge (neutral) found in the nucleus of an atom.
12. Group of elements in the periodic table, including beryllium, magnesium, calcium, and others, with properties similar to the alkali metals.
16. A one or two-letter abbreviation used to represent an element in the periodic table.
17. Atoms of the same element with the same number of protons but different numbers of neutrons.
18. The number of protons in the nucleus of an atom, which determines its place in the periodic table.
19. Elements in the central block of the periodic table

1. A tabular arrangement of chemical elements based on their atomic number, electron configuration, and recurring chemical properties.
3. Subatomic particles with a positive electric charge found in the nucleus of an atom.
5. The weighted average of the masses of isotopes of an element, taking into account their abundance.
7. A group of highly reactive nonmetals in Group 17 of the periodic table, including fluorine, chlorine, bromine, and iodine.
9. The total number of protons and neutrons in the nucleus of an atom.
11. The property of matter that gives rise to electric force, either positive or negative.
13. The basic unit of a chemical element, consisting of a nucleus (protons and neutrons) surrounded by electrons.
14. Group of elements in the periodic table that includes lithium, sodium, potassium, and others, characterized by their reactivity.
15. Subatomic particles with a negative electric charge that orbit the nucleus of an atom.