Across
- 4. The number of protons in the nucleus of an atom.
- 7. the substance that does the dissolving
- 9. An element that has physical and chemical properties of both metals and nonmetals; can be a semiconductor
- 14. A mixture in which substances are not distributed evenly. (You can see the different parts.)
- 15. Total mass of the protons and neutrons in an atom, measured in atomic mass units; the number of protons + neutrons
- 16. A change in matter that cannot be reversed and results in a new substance being formed; signs of chemical change include gas production (bubbles), color change, temperature change, and/or precipitate forms.
- 19. In a solution, the substance that dissolves.
- 20. Used to describe a material that can be hammered or beaten into thin sheets
Down
- 1. The tendency of a substance to undergo chemical changes.
- 2. An element that usually is a gas or brittle solid at room temperature, is not malleable or ductile, is a poor conductor of heat and electricity, and is typically dull.
- 3. The ability of a substance to be pulled into a wire.
- 5. A solid that forms during a chemical reaction that takes place in a solutio
- 6. A vertical column of the elements in the periodic table- can show the number of valence electrons.
- 8. group of two or more atoms held together by chemical bonds.
- 10. A change in matter that usually can be be reversed such as size, shape, or state.
- 11. horizontal row of elements in the periodic table- shows number of electron shells for an element
- 12. Hard substance that will break or shatter easily
- 13. The elements or compounds produced by a chemical reaction.
- 17. An atom that has lost or gained electrons and therefore has an electrical charge.
- 18. A pure substance that forms when two or more elements are held together by a chemical bond; Every molecule of a compound is the same.