Chemistry

2. organizes all discovered chemical elements
3. The ability of an atom to form chemical bond
5. The smallest particle
8. a chemical bond that involves the sharing of electrons to form electron pairs between atoms
9. a substance that can accept hydrogen ions in water and can neutralize an acid
11. tells us the number of atoms of each element in a compound
12. a group of atoms held together by covalent bonds
14. The loss of electrons in a chemical reaction
16. substance produced by the reaction of an acid with a base

1. A substance that speeds up a chemical reaction
2. a measure of the acidity or basicity of a solution
4. a thing that is composed of two or more separate elements; a mixture.
6. A chemical that gives off hydrogen ions in water and forms salts by combining with certain metals
7. a chemical bond formed through the complete transfer of electrons between atoms, resulting in the formation of oppositely charged ions that attract each other
10. a part or aspect of something abstract, especially one that is essential or characteristic
11. science that deals with the identification of the substances of which matter is composed
13. are converted to one or more different substances, known as products
15. An atom with the same number of protons but a different number of neutrons