Across
- 3. Chemical combination pf two or more elements in a specific ratio
- 6. Change of state from a solid to a gas or form a gas to a solid
- 9. Energy stored in a chemical and release when chemical react
- 11. Made up of 2 or more substance combined together
- 12. When two or more substance reacts to create a different substance
- 13. of one atom of an element calculated from the total number of protons
- 16. Group 2 in the periodic table
- 21. An experiment in which all reactants and all products of a chemical reaction are accounted for
- 22. Description of how a substance interacts with other substances
- 24. Positively charged particles in the nucleus of an atom
- 25. measure of atomic mass; 1 amuis equal to 1/12th the mass of a carbon 12 atom
Down
- 1. Smallest part of the element, made up of nucleus containing protons and neutron
- 2. Substance made of only one kind of matter, which has a unique sets of properties
- 4. Anything that has mass and occupies space
- 5. gases Group 18 elements in the periodic table
- 7. Group 1 element in the periodic table, not including hydrogen
- 8. Combination of symbols that represent a compound
- 10. Element that has both metallic and non-metallic properties
- 14. Refers to the tree common states in which matter can exist: solid liquid and gas
- 15. A reaction that takes place when 2 or more substance react to form a new substance
- 17. Colorless,Odorless gas
- 18. Organic molecules made up of atoms of carbon, hydrogen and oxygen
- 19. Characteristics that can be used to describe a substance
- 20. dull, brittle element that does not conduct electricity
- 23. Substance that helps s chemical reaction to proceed more quickly