Across
- 6. A measure of how much matter is in an object
- 9. A pure substance that cannot be broken down into other substances by chemical or physical means
- 10. A change in which one or more substances combine or break apart to form new substances
- 12. A characteristic of a pure substance that can be observed without changing it to another substance
- 15. Two or more substances that are together in the same place but their atoms are not chemically bonded
- 16. A measure of the force of gravity acting on an object
- 17. The principle that the total amount of matter is neither created nor destroyed during a chemical or physical change
Down
- 1. A system of units scientists use to measure the properties of matter
- 2. The amount of space that matter occupies
- 3. A change that alters the form or appearance of a material but does not make the material into another substance
- 4. A substance made of two or more elements chemically combined
- 5. A neutral group of two or more atoms held together by bonds
- 7. The measurement of the mass of a substance related to its volume
- 8. A characteristic of a substance that describes its ability to change into different substances
- 11. The study of the properties of matter and how matter changes
- 13. Anything that has mass and takes up space
- 14. The basic particle from which all elements are made