Across
- 7. A combination of chemical symbols and numbers used to represent a compound (e.g., H2O).
- 8. A one- or two-letter abbreviation used to represent an element on the periodic table (e.g., Na, O, or Au).
- 10. A type of element that is usually dull, brittle, and a poor conductor of heat and electricity.
- 11. Anything that has mass and takes up space.
- 12. Two or more atoms that are bonded together; they can be the same element or different elements.
- 14. A physical property calculated by dividing an object's mass by its volume; it determines if things sink or float.
Down
- 1. A type of change where a substance changes its appearance or state (like melting ice), but is still the same substance.
- 2. The smallest building block of matter that still has the properties of that element.
- 3. A pure substance made of two or more different elements that are chemically bonded together.
- 4. The small number written slightly below and to the right of a chemical symbol that shows how many atoms are present.
- 5. The amount of physical space an object takes up.
- 6. A pure substance made of only one kind of atom that cannot be broken down.
- 9. A type of element that is shiny, malleable, and conducts heat well.
- 12. A combination of two or more substances that are physically combined, but NOT chemically bonded.
- 13. A measure of the amount of matter in an object, usually measured in grams.