Across
- 3. A type of bond where electrons are transferred from one atom to another.
- 5. A substance that changes color in response to the presence of an acid or a base.
- 7. The smallest unit of an element, composed of protons, neutrons, and electrons.
- 11. A bond formed by the sharing of electrons between atoms.
- 12. A substance that increases the rate of a chemical reaction without being consumed in the reaction.
- 14. The process in which a liquid becomes a gas at a temperature below its boiling point.
- 16. A substance that speeds up a chemical reaction by lowering the activation energy.
- 18. A substance that slows down a chemical reaction.
- 19. The temperature at which a substance changes from a liquid to a gas.
- 20. A pure substance made of only one type of atom.
Down
- 1. A measure of how much solute is dissolved in a solvent.
- 2. The force of attraction between opposite electric charges.
- 4. The smallest particle of an element that retains the chemical properties of that element.
- 6. A substance formed by the chemical combination of two or more elements in definite proportions.
- 8. A homogeneous mixture composed of two or more substances.
- 9. The smallest unit of a compound that retains its chemical properties.
- 10. The process by which a substance is transformed into one or more new substances with different properties.
- 13. The study of the nature and behavior of matter and energy.
- 15. A compound that donates hydrogen ions when dissolved in water.
- 17. The amount of matter in an object.