Chemistry

7. A characteristic of a substance that describes how it reacts with other substances to form new substances.
8. An element that exhibits properties of both metals and nonmetals.
9. A neutrally charge particle
11. An element that typically exhibits good electrical conductivity, luster, and malleability, usually readily losing electrons to form positive ions.
12. An atom that has gained or lost electrons, resulting in a net positive or negative charge
13. A negative charge particle
15. Number Number of protons in atoms nucleus

1. The tendency of a substance to undergo chemical reactions with other substances.
2. The total mass of an atom, primarily determined by the number of protons and neutrons
3. A characteristic of a substance that can be observed without changing its composition, such as color, density, or melting point.
4. A substance with a consistent composition throughout, consisting of only one type of atom or molecule.
5. Anything that takes up space and has mass
6. Smallest unit of a element
9. An element that lacks the characteristics of a metal, often poor conductor of electricity
10. A positive charge particle
14. A pure substance composed of only one type of atom, which cannot be broken down into simpler substances through chemical reactions