Chemistry Crossword

3. workplace hazardous materials information system
5. pure substance that cannot be broken down into other substances (made up of only one type of atom)
6. Neutral particles
7. a change from gas to liquid
11. can reverse (e.g melting ice) one in which a material changes from one state to another.
14. characteristics of a substance
18. how a substance interacts with other substances (acid)
19. a solid also can change directly into a gas and vise versa
22. change from solid to liquid
23. change from liquid to gas (a;so known as vaporization)

1. Nucleus contained positively charged particles
2. chemical combination of two or more elements in a specific ratio
4. a table in which the elements are organized, by their physical and chemical properties
8. can't reverse (burning wood) when two or more materials react and create new materials.
9. appearance from the outside e.g lustre
10. Negatively charged particles
12. each element is composed of a particle called
13. heterogeneous mixture (mixed vegetables )
15. is anything that has mass and occupies space
16. substance made up of only one kind of matter, which has a unique set of properties
17. combinations of pure substances the components of a mixture do not combine chemically
20. liquid to a solid
21. solids, liquid or gas depends on temperature