Chem terms Crossword

2. chemical elements arranged in order of atomic number usually in rows so that elements that they show in vertical column's
8. is the tendency for an atom of a given chemical element to attract shared electrons when forming a chemical bond.
10. a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
12. a column of elements in the periodic table of the chemical elements.
14. is one of two stable isotopes of hydrogen.
15. The horizontal rows of the periodic table.
16. is a subatomic particle, symbol p or p⁺ , with a positive electric charge.

1. an analytical technique that is used to measure the mass-to-charge ratio of ions.
3. is the minimum amount of energy required to remove the most loosely bound electron of an isolated neutral gaseous atom or molecule.
4. is a pure substance consisting only of atoms that all have the same numbers of protons in their atomic nuclei.
5. are two or more types of atoms that have the same atomic number and position in the periodic table.
6. is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons.
7. is a subatomic particle, symbol n or n⁰, which has a neutral charge.
9. a negatively charged ion.
11. a positively charged ion.
13. is a subatomic particle, whose electric charge is negative one elementary charge.