Across
- 2. , the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
- 4. , how much matter a object has
- 6. , a substance made by mixing other substances together
- 7. , firm and stable in shape
- 11. , where the neutrons and the protons are in a atom
- 13. , a celestial body moving in an elliptical orbit around a star
- 15. , the 4th state of matter
- 16. , a celestial object consisting of a nucleus of ice and dust
- 17. , the action of rotating around an axis
- 20. , the positive charged particle of a atom
- 21. , vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
- 22. , a negative charged particle of a atom
Down
- 1. , the degree to which a specified material conducts electricity
- 2. , matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape and no fixed volume
- 3. , any thing with a ph under 7
- 5. , the rate at which something happens or is done
- 8. , a substance that flows freely but is of constant volume
- 9. , an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
- 10. , a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light
- 12. , a substance formed from two or more elements chemically united in fixed proportions
- 14. , a small rocky body orbiting the sun
- 18. , the building blocks of all matter
- 19. , any thing that has a ph over 7
- 20. , the degree of highness or lowness of a tone
- 23. , the neutral charged particle in a atom