Across
- 3. - represents a compound; represented by symbols and subscripts
- 5. - may increase or decrease during a chemical change (hot or cold)
- 6. - pure substance; combines 2 or more elements and is represented by a chemical formula
- 8. - a pure substance that cannot be broken down into another substance
- 9. - bubbles produced during a chemical reaction
- 10. - anything that has mass and takes up space
Down
- 1. - represents the name of an element; written with a capital letter and sometimes a lower case letter
- 2. - # after chemical symbol in a formula; tells you the number of atoms present for each element in a formula
- 4. - the smallest particle of an element
- 7. - a solid substance that appears during a chemical reaction