Across
- 4. A positively charged ion
- 5. A metal has a mass of 20 g and a volume of 5 mL. What is its density?
- 7. The number of protons in an atom’s nucleus.
- 8. A nonmetal on the periodic table.
- 10. How many moles are in 6.02 × 10²³ molecules of a substance?
Down
- 1. A reaction where substances rearrange to form new products.
- 2. The method used to convert units using conversion factors.
- 3. The smallest unit of an element that retains its properties.
- 6. The column on the periodic table that indicates valence electrons.
- 7. If an atom gains electrons, it becomes this type of ion.
- 9. A measurement showing mass per unit volume.