Science Review

6. are very reactive
7. whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
9. are Neutral
14. are a malleability, ductility, and high reflectivity of light.
15. are reactive nonmetallic elements that form strongly acidic compounds with hydrogen from which simple salts can be made.
16. are any of the gaseous elements helium

1. are only change the appearance of a substance, not its chemical composition.
2. are a horizontal line in the periodic table
3. are when one chemical substance is transformed into one or more different substances
4. is a chemical elements arranged in order of atomic number usually in rows so that elements with similar atomic structure
5. are each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
8. are a column in the periodic
10. are negative
11. are positive
12. are an element/substance that is not element
13. are very reactive metals