chemistry

3. The process by which a solid becomes a liquid
5. Different atoms of the same element
7. The process by which a gas becomes a solid
8. The vertical column in the periodic table
10. The seventh major group of the periodic table
11. Electrically neutral subatomic particle found in the nucleus
14. A substance containing 2 or more elements which are chemically combined
15. number The total number of protons and neutrons in a nucleus
19. A substance containing 2 or more elements which are not chemically combined
20. The ability of metal to shape has something to do with it
22. A substance consisting of atoms which are all the same
23. Made of only one type atom
24. A horizontal row in the periodic table

1. The process by which a solid becomes a gas
2. Negatively charged subatomic particle found in the shells around the nucleus
4. The first element in the periodic table
6. Positively charged subatomic particle found in the centre of the nucleus
9. Have the similar meanings to element
12. The smallest particle of a chemical element
13. 2 or more atoms joined together by covalent bond
16. metal The first major group of the periodic table
17. The 17th element in the periodic table
18. Metal's ability to stretch and shorten has something to do with it
21. Substances with this property do not remain at a fixed temperature when molten in a solid-liquid mixture