Across
- 2. Atoms with a positive or negative charge
- 3. Chemicals you start with before the reaction in chemical equation
- 7. Elements on periodic table can be grouped into these based on their chemical properties.
- 8. Gases or brittle solids at room temperature, and good insulators
- 9. Combination of two or more pure substances that are not chemically combined
- 12. Positively charged ions
- 13. New chemicals formed by the reaction in chemical equation
- 14. Number of protons an atom has
- 16. Atoms of the same elements that have a different atomic mass than found on the periodic table
- 17. Vertical columns of elements on the periodic table
- 19. Properties that are determined by the use of five senses
- 21. Russian Chemist who developed periodic table in 1869, in order of increasing atomic mass.
- 22. Good conductors of heat, exist as solids at room temperature
Down
- 1. Average masses of all the isotopes of an element
- 4. Simplest form of pure substance
- 5. Ability to do work or cause change
- 6. Horizontal rows of elements on periodic table
- 10. Contains protons and neutrons
- 11. Properties that are determined by a substance's ability to react with other substances.
- 12. Pure substance that is unions of two or more different elements. Can be broken into simpler substances.
- 15. Have properties of both metals and non-metals. Exist as solids at room temperature
- 18. Negatively charged ions
- 20. Energy that is transferred between objects that are different temperatures