Across
- 2. A gas produced during combustion and respiration.
- 5. The glowing gaseous part of a fire where combustion occurs.
- 7. A substance with a pH of 7 that is neither acidic nor basic.
- 10. Elements that conduct heat and electricity and are usually shiny and malleable.
- 14. A tool used to magnify small objects so they can be seen clearly.
- 15. Describing a substance that is basic with a pH greater than 7.
- 16. A fabric heated without oxygen that ignites easily and is used to start fires.
- 17. A scale used to measure how acidic or basic a substance is.
- 18. Substances formed as a result of a chemical reaction.
- 19. Compounds formed from the reaction between an acid and a base.
- 20. Substances that release hydroxide ions in water and have a high pH.
Down
- 1. The branch of science that studies substances, their properties, and how they change.
- 3. The careful use of senses or tools to gather information.
- 4. A gas required for combustion and many chemical reactions.
- 5. The visible result of combustion that releases heat and light.
- 6. Water in its gaseous state.
- 8. Substances that release hydrogen ions in water and have a low pH.
- 9. Substances that take part in a chemical reaction.
- 11. A chemical reaction in which a substance reacts with oxygen and releases energy.
- 12. Thermal energy transferred from a warmer object to a cooler one.
- 13. A substance that provides energy when it undergoes combustion.
- 17. A series of steps that lead to a specific result.