Across
- 3. – Anything that has mass and occupies space.
- 5. Mixture – A mixture that is uniform throughout (example: salt water).
- 8. Bonds – The forces that hold atoms together in compounds.
- 11. – The smallest unit of matter that retains the properties of an element.
- 12. Bonds – A type of covalent bond where electrons are shared unequally, creating partial charges.
- 13. – A state of matter with a definite volume but no definite shape.
- 16. – Atoms of the same element with the same number of protons but different numbers of neutrons.
- 18. Bonds – Bonds formed when electrons are transferred from one atom to another, creating oppositely charged ions.
- 19. – Atoms or molecules that have gained or lost electrons, giving them a positive or negative charge.
Down
- 1. – Pure substances made of only one type of atom.
- 2. Substances – Matter that has a fixed composition and definite properties (elements and compounds).
- 3. – Combinations of two or more substances that are physically combined but not chemically bonded.
- 4. Theory – The scientific theory that explains the nature, behavior, and structure of atoms.
- 6. – Negatively charged particles found outside the nucleus of an atom.
- 7. Mixture – A mixture where the substances are not evenly mixed (example: salad).
- 9. Bonds – Bonds formed when atoms share electrons.
- 10. Number – The number of protons in the nucleus of an atom, which identifies the element.
- 14. Mass – The weighted average mass of all the isotopes of an element.
- 15. – A state of matter with neither definite shape nor definite volume.
- 17. – A state of matter with a definite shape and volume.